236 results on '"Carrión Fité, Francisco Javier"'
Search Results
2. Thermodynamic and kinetic parameters of polyester dyeing with Disperse Blue 56 using bio-based auxiliaries and co-solvent microemulsion
- Author
-
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Radei, Shahram, Carrión Fité, Francisco Javier, Ardanuy Raso, Mònica, Canal Arias, José María, Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Radei, Shahram, Carrión Fité, Francisco Javier, Ardanuy Raso, Mònica, and Canal Arias, José María
- Abstract
The aim of the study was to dye polyester fabric with a low molecular weight anthraquinone type disperse dye (C.I. Disperse Blue 56), with n-butylacetate as co-solvent in the microemulsion system and the presence of two bio-based auxiliaries (ortho-vanillin and coumarin), at temperatures lower than 100¿. In order to investigate the influence of temperature and auxiliaries on the kinetic dyeing process, the energy of the activation was determined by the kinetic rates constants. The activated entropy values were obtained by the theory of absolute rates of dyeing and diffusion of the activated state of the dye for the disorder state of the dyeing system. Higher activated energies were found, as well as higher activated entropy, meaning higher dye absorption, for polyester samples dyed with ortho-vanillin/n-butylacetate compared with polyester samples dyed with coumarin/n-butylacetate. Color strength values of the polyester fabric dyed using the proposed microemulsion dyeing system at low temperature (95¿) were similar to polyester fabric dyed with a conventional dyeing system at high temperature (135¿). Regarding color fastness to washing and ironing, it was found that the use of the auxiliaries did not significantly modify the fastness values of the dyed samples, Postprint (author's final draft)
- Published
- 2019
3. Kinetics of low temperature polyester dyeing with high molecular weight disperse dyes by solvent microemulsion and agrosourced auxiliaries
- Author
-
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Universitat Politècnica de Catalunya. SPPT - Superfícies, Productes i Processos Tèxtils, Radei, Shahram, Carrión-Fité, Francisco Javier, Ardanuy Raso, Mònica, Canal Arias, José María, Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Universitat Politècnica de Catalunya. SPPT - Superfícies, Productes i Processos Tèxtils, Radei, Shahram, Carrión-Fité, Francisco Javier, Ardanuy Raso, Mònica, and Canal Arias, José María
- Abstract
This work focused on the evaluation of the kinetics of dyeing polyester fabrics with high molecular weight disperse dyes, at low temperature by solvent microemulsion. This study also compared the effect of two non-toxic agro-sourced auxiliaries (o-vanillin and coumarin) using a non-toxic organic solvent. A dyeing bath consisting of a micro-emulsion system involving a small proportion of n-butyl acetate was used, and the kinetics of dyeing were analysed at four temperatures (83, 90, 95 and 100 °C). Moreover, the dyeing rate constants, correlation coefficient and activation energies were proposed for this system. It was found that o-vanillin yielded higher dye absorption levels than coumarin, leading to exhaustions of 88% and 87% for Disperse Red 167 and Disperse Blue 79, respectively. K/S values of dyed polyester were also found to be higher for dye baths containing o-vanillin with respect to the ones with coumarin. In terms of hot pressing fastness and wash fastness, generally no adverse influence on fastness properties was reported, while o-vanillin showed slightly better results compared to coumarin, Postprint (published version)
- Published
- 2018
4. Sonochemically Processed Cationic Nanocapsules: Efficient Antimicrobials with Membrane Disturbing Capacity
- Author
-
Fernandes, Margarida M., Francesko, Antonio, Torrent Burgués, Juan, Carrión Fité, Francisco Javier, Macedo Fernandes, Margarida Maria, Tzanov, Tzanko, Heinze, Thomas, Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Universitat Politècnica de Catalunya. GBMI - Grup de Biotecnologia Molecular i Industrial
- Subjects
Biopolímers ,Cell Membrane Permeability ,Agents antiinfecciosos ,Polymers and Plastics ,Lipid Bilayers ,Drug Evaluation, Preclinical ,Bioengineering ,Nanotechnology ,engineering.material ,Bacterial cell structure ,Nanocapsules ,Biomaterials ,Chitosan ,chemistry.chemical_compound ,Enginyeria química [Àrees temàtiques de la UPC] ,Biopolymers ,Anti-Infective Agents ,Cations ,Escherichia coli ,Materials Chemistry ,Humans ,Ultrasonics ,Cellulose ,Phospholipids ,Liposome ,biology ,Chemistry ,Cell Membrane ,Phosphatidylglycerols ,Fibroblasts ,biology.organism_classification ,Combinatorial chemistry ,Membrane ,Liposomes ,engineering ,Biopolymer ,Anti-infective agents ,Bacteria - Abstract
Bacterial-mediated diseases are a major healthcare concern worldwide due to the rapid spread of antibiotic-resistant bacteria. One strategy to manage the bacterial infections while avoiding the emergence of resistant strains implies specific targeting and disruption of bacteria membranes. This work evaluates the potential of nanostructured biopolymer derivatives, nanocapsules (NCs), to disrupt the bacteria cell walls and effectively kill planktonic microorganisms. Two biopolymers, chitosan and cellulose, were chemically modified to synthesize derivatives with improved cationic character (thiolated chitosan and aminocellulose) prior to their processing into nanocapsules via a one-step sonochemical process. The interactions of NCs, displaying an average size of around 250 nm, with bacteria membrane were evaluated using two membrane models: Langmuir monolayers and liposome bilayers composed of a l-α-phosphatidylglycerol phospholipid extracted from Escherichia coli. NCs possessed improved membrane disturbing capacity in comparison to the nonprocessed biopolymer derivatives, by drastically increasing the monolayer fluidity and inducing more than 50% leakage of a dye inserted in the bilayered liposomes. In addition, membrane disturbance was directly proportional to the NCs cationic charge. Whereas evidence showed that thiolated chitosan and aminocellulose interacted with the bacteria membrane through a "carpet model", the NCs were found to induce larger surface defects and high local perturbance through a "detergent model". Importantly, the degree of disruption caused by the biopolymer derivatives and NCs correlated well with the antimicrobial capacity against Escherichia coli, selectively killing bacteria cells without imparting toxicity to human fibroblasts.
- Published
- 2014
5. MATERIALS COLORANTS I PRODUCTES AUXILIARS (Examen 1r quadrimestre, 2n parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2017
6. MATERIALS PER AL DISSENY DE PRODUCTES TÈXTILS (Examen 2n quadrimestre, 2n parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2017
7. COLORIMETRIA, COLORANTS I PIGMENTS (Examen 1r quadrimestre, 2n parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2017
8. Development auxiliaries for dyeing polyester with disperse dyes at low temperatures
- Author
-
Carrión Fité, Francisco Javier, Radei, Shahram, Carrión Fité, Francisco Javier, and Radei, Shahram
- Abstract
High-molecular weight organic compounds known as carriers are widely used to expedite polyester dyeing at atmospheric pressure at 100 °C. However, carriers are usually poorly biodegradable and can partially plasticize fibres. Also, dyeing at temperatures above 100 °C in the absence of a carrier entails using expensive equipment. In this work, we developed an alternative method for dyeing polyester at temperatures below 100 °C that reduces energy expenses, dispenses with the need to invest in new equipment and avoids the undesirable effects of non-biodegradable carriers. The method uses disperse dyes in a microemulsion containing a low proportion of a non-toxic organic solvent and either of two alternative development auxiliaries (coumarin and o-vanillin) that is prepared with the aid of ultrasound, Postprint (published version)
- Published
- 2017
9. Surface treatment of denim fabric for selective fading
- Author
-
Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, and Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil
- Subjects
Teixits i tèxtils -- Acabat ,Fading ,Denim ,Cotó -- Acabat ,Surface treatment ,Oxidation ,Cotton textiles ,Data_CODINGANDINFORMATIONTHEORY ,Indústria tèxtil -- Acabats ,Enginyeria tèxtil::Fabricació tèxtil::Acabats tèxtils [Àrees temàtiques de la UPC] ,UV light ,Cotton finishing - Abstract
A growing customer demand currently exists for denim apparel with a used, worn, faded appearance or even holes in the fabric. In this work, we examined the effect of treating denim with an aqueous solution of an oxidant prior to UV-C irradiation for localized fading of the fabric in order to obtain the faded, worn apperance sought by some jeans users. We propose a new technology using ultraviolet light in combination with an oxidant to modulate the degree of fading of denim fabric
- Published
- 2016
10. Influence of special clays as builder in ecological detergents
- Author
-
Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, and Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil
- Subjects
sepiolite and soft ening ,microparticles ,Benonite ,Sepiolith ,bentonite ,Detergents ,builders ,Química tèxtil ,Cotton fabric ,Detergency ,Waschleistung ,Enginyeria tèxtil [Àrees temàtiques de la UPC] ,Weichspü ler ,Mikropart ikel ,Enginyeria química::Indústries químiques::Química tèxtil [Àrees temàtiques de la UPC] ,Bentonita ,Builder - Abstract
The aim of this work is to determine the influence of certain clay micro particles added to detergent formulation to act as builders in removal of impurities (detersive power) during the washing of a standard cotton fabric (EMPA), and also to determine the whiteness of the fabric and its softness after washing. Sepiolite was used separately and together with bentonite, in the forin of micro partides. Bentonite is held to have a softening effect on cotton. A whitener was added to the detergent formulations to compensate for a possible effect of diminished whiteness in the washed fabric. Scanning electron microscope images of the fibres were taken to show deposition of the builders on the fabric. A non-toxic microemulsified solvent, dimethylsulfoxi de (DMS), suitably microdispersed with use of an amphoteric sur factant as ernulsifier, was added to improve the performance of the detergent formulations used, notably enhancing the deter gency obtained in the presence of the clay microparticles tested. Ziel dieser Arbeit ist, die Wirkung be stimmter Tonmikropartikel zu bestimmen, die in Waschm ittelfor mulierungen als Builder bei der Entfernung von Verunreinigun gen (Waschkraft) wahrend der Wasche von angeschmutztem Standard-Baumwolltestgewebe (EMPA) eingesetzt werden. Ebenso werden der Weigrad des Gewebes und seine Weich heit nach der Wasche bestimmt. Sepiolith-Mik ropartikel wurden allein und gemeinsam mit Bentonit verwendet. Bentonit wurde beibehalten, um einen weichmachenden Effekt an der Baum wolle zu erzielen. Ein Auf heller wurde der Waschmittelformulie rung ebenfalls zugesetzt, um eine mogliche Minderung des Weigrades der gewaschenen Gewebe zu kompensieren . Von den Geweben wurden rasterelektronenmikroskopische Aufnah men gemacht, um die Ablagerungen der Builder auf den Ge weben zu zeigen. Dimethylsulfoxid (DMS), ein nicht-toxisches, mikroemulgiertes Losemittel, wurde mit einem amphoteren Tensid (als Emulgator) mikrodipergiert und zur Verbesserung der Leistung der verwendeten Waschmittelformu ierung, speziell zur Verstarkung der Waschkraft in Gegenwart der Tonmikroparti kel, hinzudosiert
- Published
- 2015
11. MATERIALS COLORANTS I PRODUCTES AUXILIARS (Examen 1r quadrimestre, 1r parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2016
12. MATERIALS COLORANTS I PRODUCTES AUXILIARS (Examen 1r quadrimestre, 2n parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2016
13. Deposition of solid impurity during washing of softented cotton in function of the mixtures of surfactants
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
The objective of this paper is to measure the deposition of solid impurity on finished cotton fabric treated with DMDHEU resin during washing cycles of cotton fabric treated with different softeners. Fabrics will be softened with the conventional esterquat and with aminosilicone products having different molecular weights and mixtures of both. The anionic surfactant sodium dodecyl benzene sulphonate and non-ionic surfactant ethoxylated fatty alcohol were used. Both separately and in different proportions during the deposition trials were used. In general, the deposition values decrease on increasing the quantity of non-ionic surfactant in the mixture and with the finished cotton fabric increase this one after the application of the softeners tested alone and with their mixtures, Postprint (author's final draft)
- Published
- 2016
14. DETERGÈNCIA I PRODUCTES AUXILIARS (Examen 2n quadrimestre, 2n parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2016
15. MATERIALS PER AL DISSENY DE PRODUCTES TÈXTILS (Examen 2n quadrimestre, 1r parcial)
- Author
-
Carrera Gallissà, Enric, Carrión Fité, Francisco Javier, Carrera Gallissà, Enric, and Carrión Fité, Francisco Javier
- Published
- 2016
16. Surface treatment of denim fabric for selective fading
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
A growing customer demand currently exists for denim apparel with a used, worn, faded appearance or even holes in the fabric. In this work, we examined the effect of treating denim with an aqueous solution of an oxidant prior to UV-C irradiation for localized fading of the fabric in order to obtain the faded, worn apperance sought by some jeans users. We propose a new technology using ultraviolet light in combination with an oxidant to modulate the degree of fading of denim fabric, Postprint (published version)
- Published
- 2016
17. Prevent redeposition of solid impurities during washing synthetic fabrics
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
The textile washing process involves basically three stages: (1) removing the soiling from the substrate, (2) suspending the soling removed in the washing bath and (3) preventing redeposition of the soiling onto the substrate from which it has just been removed. In fact, soiling removed from the substrate may have deposited on it to a greater or lesser extent during the detergent process, as unwanted phenomenon that can be avoided using appropriate polymers. Preventing the redeposition of impurities is especially important during the washing of synthetic fibres with a compact crystal structure such as polyester or acrylics. The primary purpose of this work was to assess the performance of a polyethylene glycol polyester copolymer used as a detergent additive to prevent redeposition of solid impurities during the washing of standard polyester and acrylic fabrics in terms of the zeta potential of the fabrics. The copolymer was used in combination with the anionic surfactant, sodium dodecylbenzenesulfonate, the non-ionic surfactant fatty alcohol ethoxylate with 7 mol E.O. or both in variable proportions. The soiling used as a solid impurity in the washing process was carbon black. The observed behaviour is explained in terms of the electrical double layer of the fabrics, which was characterised separately with each surfactant and their mixture, Postprint (author's final draft)
- Published
- 2016
18. The detergency of surfactant mixtures and bentonites on cotton fabric
- Author
-
Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, and Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil
- Subjects
Softening ,Detergency ,Surfactant mixtures ,Enginyeria tèxtil [Àrees temàtiques de la UPC] ,Whiteness ,Detergents ,Bentonite ,Enginyeria química::Indústries químiques::Química tèxtil [Àrees temàtiques de la UPC] ,Surface active agents ,Textile chemicals ,Cotton fabrics ,Tensioactius -- Aplicacions industrials ,Química tèxtil - Abstract
The primary aim of this work is to attain improvement of the softness of cotton fabric during the washing process with ecological surfactants. To attain that improvement, sodium bentonite was added to the detergent formulations to produce a softening effect during washing and obtain the so called “soft detergent” effect. Sodium bentonite (a mineral composed mainly of hydrated aluminium silicates) was mixed with the surfactants used in ecological detergents. This product was used with a suitable particle size that, given its large specific surface area, facilitated its deposition on the cotton fabric, producing the desired effect of increasing the softness of the washed fabric. The surfactants used were an anionic surfactant, namely LAS, and two non-ionic surfactants, namely APG and AE, used separately and as mixtures, without co-formulants, to demonstrate their detersive power in one wash and repeated washes, depending on the nature of the surfactants and on their separate mixtures an mixtures in different proportions of anionic and non-ionic surfactants in combination in all cases with a constant concentration of sodium bentonite with two particle sizes. Evaluation was performed of the subjective softness (to the touch) of pairs of samples by several observers and also of changes in whiteness after deposition of the bentonite during washing
- Published
- 2014
19. Improvement of cotton fabric detergency with prior surface treatment
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
The aim of this work was to study the effect of treatment of EMPA standard cotton fabric with UV-C radiation to determine the performance of detergency with treated and untreated fabric, as well as redeposition of impurities after washing those fabrics. The detergent formulations used for testing were an anionic surfactant, sodium dodecylbenzenesulfonate (SDBS), and a non-ionic surfactant, alcohol ethoxylate (AE-7) with 7 moles EO, separately and in mixtures of the two in varying molar ratios. The impurities used for evaluation of detergency were oleic acid as an oily impurity and carbon black as a solid impurity. Redeposition of the solid impurity was studied using carbon black in the wash. Differences in capillarity for water absorption by the cotton fabric and superficial chemical changes on the surface of the fabric were determined using the corresponding FTIR infrared spectrum, Postprint (published version)
- Published
- 2015
20. MATERIALS PEL DISSENY DE PRODUCTES TÈXTILS (Examen 2n quadrimestre, 2n parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2015
21. Influencia del tratamiento superficial del algodón en su lavado
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
El objetivo de este trabajo fue obtener el efecto del pretratamiento de tejido de algodón standard EMPA mediante radiaciones UV-C, con objeto de obtener su comportamiento diferenciado respecto al tejido sin tratar, frente a la redeposición de impurezas y la detergencia con impurezas liquidas y sólidas. Las formulaciones detergentes se planificaron con mezclas de tensioactivos, tales como el tensioactivo aniónico, dodecilbencenosulfonato sódico (SDBS) y un tensioactivo no-iónico alcohol graso etoxilado (AE) con 7 moles de O.E, por separado y en mezcla de ambos en varias proporciones. Las impurezas utilizadas para la evaluación de la detergencia fueron de tipo oleoso, ácido oleico y de tipo sólido negro de humo. Las redeposiciones de impurezas se estudiaron empleando el negro de humo durante el lavado. Con objeto de justificar los cambios superficiales del tejido de algodón con pretratamiento con UV-C. se determinaron capilaridades y se justificó el cambio químico superficial del algodón mediante su correspondiente espectro de infrarrojos.(FTIR) The aim of this work was to study the effect of treatment of EMPA standard cotton fabric with UV-C radiation to determine the performance of detergency with treated and untreated fabric, as well as redeposition of impurities after washing those fabrics. The detergent formulations used for testing were an anionic surfactant, sodium dodecylbenzenesulfonate (SDBS), and a non-ionic surfactant, alcohol ethoxylate (AE-7) with 7 m. EO, separately and in mixtures of the two in varying molar ratios. The impurities used for evaluation of detergency were oleic acid as an oily impurity and carbon black as a solid impurity. Redeposition of the solid impurity was studied using carbon black in the wash. Differences in capillarity for water absorption by the cotton fabric and superficial chemical changes on the surface of the fabric were determined using the corresponding FTIR infrared spectrum, Postprint (published version)
- Published
- 2015
22. Staining of undyed fabrics when washed with dyed cotton fabrics using alkyl polyglucoside mixtures with anionic surfactant
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
The increasingly widespread use of non-ionic surfactants as main ingredients in domestic detergent formulations requires an understanding of their performance during washing, not only as separate products but also as binary mixtures with anionic surfactants. In order to attain acceptable levels of biodegradability and toxicity, alkyl polyglucosides (APGs) have appeared on the market. These non-ionic surfactants, obtained from natural substances (saccharides), are 100% biodegradable and have very attractive features for application to washing. They are highly soluble, only slightly sensitive to the presence of electrolytes and rarely affected by water hardness. The aim of our work was to analyze behavior in the staining of undyed cotton fabric with the dye desorbed in the washing of cotton fabric previously dyed and finished with resin and softened, by means of the use of the surfactant APGs with sodium dodecyl benzene sulfonate, separately and in mixtures in different proportions. Likewise, the staining of undyed diacetate, polyamide, polyester, acrylic, cotton and wool fabrics was obtained. The cotton was previously dyed with red, orange and blue direct dyes. The behavior of the discoloration of dyed and finished and unfinished cotton fabric and the staining of undyed fabrics in washing were related to the zeta potentials of the fabrics obtained by the streaming potential method in the presence of the surfactants and their mixtures used After washing, the undyed fabric with the anionic surfactant showed a greater difference in color than non-ionic surfactant and when the concentration of the non-ionic surfactant in the mixture was increased the color difference decreased. The zeta potentials (absolute values) of undyed and dyed and finished cotton fabric in the presence of these surfactants gave the same order values, which increased with the surfactant concentration, Postprint (author’s final draft)
- Published
- 2015
23. Redeposition of impurities on wool fabric during washing with ecological surfactants and solvent microemulsion
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
The aim of this paper was to study addition of a nontoxic solvent microemulsion to conventional wash formulations with the aim of improving the performance of the conventional washing. In this work, the redeposition performance during washing was studied after washing a wool fabric with addition of a solid impurity The non-toxic solvent used was dimethyl sulfoxide micro-dispersed with an amphoteric surfactant as emulsifier. The fabric was washed with SDBS and biodegradable non-ionic surfactants such as an alcohol ethoxylate (AE) with 7 m. EO and an alkyl polyglucoside with 1.4 glucoside groups (APG). The fabric used was EMPA 217 wool fabric. The anionic and non-ionic surfactants and mixtures of the non-ionic surfactants were used separately and in mixture in varying proportions for the washes. Carbon black was used as the solid impurity in the washing. Sodium carbonate and sodium chloride were used as builders. The fabric was washed at low temperature (30 degrees C) with water of different hardness. In all the cases, the performance in terms of redeposition of the solid impurity (carbon black) was enhanced (decreased) for all the mixtures tested when using the microemulsion of DMS in the washing formulation, Postprint (author’s final draft)
- Published
- 2015
24. MATERIALS COLORANTS I PRODUCTES AUXILIARS (Examen 1r quadrimestre, 1r parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2015
25. Colour change of polyester dyed fabric during washing by ecological surfactants
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
Alkyl polyglucosides (APGs) have appeared on the market, offering good levels of biodegradability and ecotoxicity. These nonionic surfactants, obtained from natural substances, are 100% biodegradable and very suitable for washing. They are highly soluble, only slightly sensitive to electrolytes and rarely influenced by water hardness. This paper analyses the behaviour of APG and linear alkyl sulfonate, separately and in mixtures of different proportions, in order to show how dyed polyester fabric changed colour during washing and how dye transfers to white textile items (diacetate, polyamide, cotton, acrylic and wool). Before this process, the polyester was dyed with disperse dyes. Disperse dyes can become deposited on white polyester fabric during washing due to various mechanical, chemical, electrical or adsorption-related causes. In an attempt to explain the behaviour of the deposition of disperse dyes in the washing process, we assessed the total potential energy between disperse dye and polyester fabric based on the theory of heterocoagulation. The zeta potentials of the insoluble disperse dyes and the fabrics were related to the results obtained by staining white fabric during washing, Postprint (author's final draft)
- Published
- 2015
26. Influence of special clays as builder in ecological detergents
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
The aim of this work is to determine the influence of certain clay micro particles added to detergent formulation to act as builders in removal of impurities (detersive power) during the washing of a standard cotton fabric (EMPA), and also to determine the whiteness of the fabric and its softness after washing. Sepiolite was used separately and together with bentonite, in the forin of micro partides. Bentonite is held to have a softening effect on cotton. A whitener was added to the detergent formulations to compensate for a possible effect of diminished whiteness in the washed fabric. Scanning electron microscope images of the fibres were taken to show deposition of the builders on the fabric. A non-toxic microemulsified solvent, dimethylsulfoxi de (DMS), suitably microdispersed with use of an amphoteric sur factant as ernulsifier, was added to improve the performance of the detergent formulations used, notably enhancing the deter gency obtained in the presence of the clay microparticles tested. Ziel dieser Arbeit ist, die Wirkung be stimmter Tonmikropartikel zu bestimmen, die in Waschm ittelfor mulierungen als Builder bei der Entfernung von Verunreinigun gen (Waschkraft) wahrend der Wasche von angeschmutztem Standard-Baumwolltestgewebe (EMPA) eingesetzt werden. Ebenso werden der Weigrad des Gewebes und seine Weich heit nach der Wasche bestimmt. Sepiolith-Mik ropartikel wurden allein und gemeinsam mit Bentonit verwendet. Bentonit wurde beibehalten, um einen weichmachenden Effekt an der Baum wolle zu erzielen. Ein Auf heller wurde der Waschmittelformulie rung ebenfalls zugesetzt, um eine mogliche Minderung des Weigrades der gewaschenen Gewebe zu kompensieren . Von den Geweben wurden rasterelektronenmikroskopische Aufnah men gemacht, um die Ablagerungen der Builder auf den Ge weben zu zeigen. Dimethylsulfoxid (DMS), ein nicht-toxisches, mikroemulgiertes Losemittel, wurde mit einem amphoteren Tensid (als Emulgator) mikrodipergiert und zur Verbesserung der Le, Postprint (author’s final draft)
- Published
- 2015
27. Electrokinetic potentials of cotton fabrics dyed and finished in presence of LAS and alkyl polyglucosides and dye transfer inhibitor
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
In this work we aimed our focus at the determination of the zeta potentials of a standard fabric of cotton Empa type (dyed, finished and softened), which was washed in the presence of surfactants and of a copolymer of action DTI - dye transfer inhibition agent -. The copolymer DTI the type VI/PVP, was used. The washing with ecological surfactants such as: a sodium dodecylbenzene sulfonate (LAS) mixed with an non-ionic alkylpolyglucoside (APG) was made. The cotton fabric was dyed with three different direct dyes (with different molecular weights), finished by the resin of DMDHEU (dimethylol dihydroxy ethylene urea) and softened with a microemulsionated compound of ammo-niumsilicone. The variation of zeta potential of cotton articles was obtained under the influence of the total concentration and the proportion of mixture of the surfactants anionic with non-ionic, and of these separately. The polymer DTI stayed to constant concentration, when mixing it with the surfactants. The variation of the zeta potentials of the cotton undyed and finished in function of the DTI were obtained., Postprint (author’s final draft)
- Published
- 2015
28. Discolouration of dyed fabrics on one side without chemicals
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
The subject of this work was the discolouration of one side of dyed cotton fabric using UV-C radiation, testing for fastness to that external radiation agent. This was studied through selection of different dyes used for dyeing cotton fabrics, namely three direct dyes, two vat dyes, seven reactive dyes, one sulphur dye, one azo dye and three mixtures of reactive dyes. The results for colour differences between the original dyed fabric and the fabric discoloured through UV-C radiation treatment show that, in general, the highest values were obtained for the reactive dyes and their mixtures, with the lowest values, in general, for the sulphur, vat and azo dyes, and intermediate values for direct dyes, Postprint (published version)
- Published
- 2015
29. Polymeric soil anti-redeposition agent for washing synthetic fabrics
- Author
-
Carrión Fité, Francisco Javier|||0000-0002-7933-3945, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, and Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil
- Subjects
Enginyeria química::Indústries químiques::Química tèxtil [Àrees temàtiques de la UPC] ,Enginyeria tèxtil ::Fibres tèxtils::Fibres sintètiques [Àrees temàtiques de la UPC] ,Textile fibers, Synthetic--Testing ,Teixits sintètics -- Proves ,Textile chemistry ,Química tèxtil - Abstract
The textile washing process consists basically of three stages: 1) removal of the soiling from the substrate, 2) suspension of the soiling in the washing bath, and 3) prevention of redeposition of the soiling on the substrate from which has just been removed. The soiling removed may be caught again on the substrate to a greater or lesser extent during the detergent process. This phenomenon constitutes the unwanted redeposition of that impurity on the substrate and polymers are added to prevent it. The redeposition of impurities must be prevented during the washing of synthetic fibres, such as polyester or acrylic, which have a compact crystalline structure. The purpose of this work is to ascertain the behavior of a polyethylene glycol polyester copolymer when used as a detergent additive to prevent redeposition of solid impurities during the washing of standard polyester and acrylic fabrics. That polymer was used in washing tests in the presence of an anionic surfactant sodium dodecylbenzenesulfonate (SDBS), and a non-ionic surfactant, fatty alcohol ethoxylate with 7 moles E.O., separately and in mixtures of both with varying proportions. The soiling applied was carbon black, as a solid impurity in washing. In order to explain the observed behavior, the electrical double layer of the fabrics was characterized, depending on the surfactants and the mixtures tested
- Published
- 2013
30. Effects of non-toxic solvent microemulsion in washing wool
- Author
-
Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, and Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil
- Subjects
Teixits i tèxtils -- Innovacions tecnològiques ,Llana -- Proves ,Wool scouring ,Textile chemicals ,Enginyeria tèxtil ::Teixits::Teixits de punt [Àrees temàtiques de la UPC] - Abstract
This work studies the detersive power and redeposition of impurities after washing standard wool fabrics with a non-toxic solvent microemulsion added to the conventional washing formulations in order improve the results of conventional washing. The solvent was dimethyl sulfoxide (DMS), emulsified and micro-dispersed with amphoteric surfactant. The fabric was washed using non-ionic surfactants, alcohol ethoxylate (AE-7) with 7 m. E.O. and an alkyl polyglucoside (APG). Detersive power was studied as function of those surfactants and their differing proportions in mixture. Detersive power was potentiated by addition sodium carbonate and sodium chloride as builders, and it was likewise studied under the influence of the salts with different water hardness used in the tests. A sequestering agent, DTPMP, was used to improve the results for detergency. The tensile strength and burst strength of the wool fabric washed with those surfactants and the microdispersed DMS with repeated washes was assessed. With those non-ionic surfactants used in the same programmed washing tests, the redeposition of a solid impurity, namely carbon black, during the washing was also studied, and a notable decrease of redeposition was attained with addition of the microemulsified DMS, which was also observed with the additional use of sodium dodecylbenzenesulfonate (LAS). In order to predict the stability of the particles of carbon black and the particles of DMS in the washing bath, the size of those particles was determined
- Published
- 2013
31. Deposition of direct dyes in washing of cotton fabric with ecological surfactants
- Author
-
Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, and Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil
- Subjects
Agents tensioactius ,Enginyeria tèxtil ::Fabricació tèxtil [Àrees temàtiques de la UPC] ,Detergents ,technology, industry, and agriculture ,Cotton fabrics--Testing ,Surface active agents ,Teixits i tèxtils -- Proves ,Enginyeria tèxtil ::Fibres tèxtils::Fibres naturals [Àrees temàtiques de la UPC] - Abstract
In this work the performance of several DTI copolymers (PVP, PV betaine, PVNO and PVNO with PVP) was tested for use as dye transfer inhibitors in washing undyed cotton fabric, in the presence of a direct dye in the washing bath. Three direct dyes were tested: red, blue and yellow. The detergent used was composed of an LAS anionic surfactant and a non-ionic fatty alcohol ethoxylate surfactant with 7 m.OE, both separately and in the different molar proportions anionic with non ionic, at a total concentration of 5 x 10-3 M, and in the presence of zeolite as a builder. Washing temperature was 40ºC and washing time was 30 minutes. Staining of the undyed cotton fabric was assessed as the CIELAB colour differences between the original fabric and the stained fabric after washing, with and without the different DTIs tested and the dye in the washing bath.
- Published
- 2012
32. Bentonitas en los detergentes en polvo: suavidad y perfumado
- Author
-
Bernal, Cristóbal, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, and Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil
- Subjects
Detergents -- Anàlisi ,Detergents--Analysis ,Enginyeria tèxtil [Àrees temàtiques de la UPC] ,Enginyeria química::Indústries químiques::Química tèxtil [Àrees temàtiques de la UPC] ,Detergents--Additives ,Enginyeria tèxtil - Abstract
The sodium bentonite is a mineral composed by hydrated aluminium silicates with a great capacity for absorbing several types of substrates. In cotton articles, softeners are added after the washing process. Softeners are organic products which are absorbed within the last rinse. These types of softeners can present some disadvantages as the possible lack of biodegradability, solidity and higher hydrophobicity which might reduce the sensation of comfort in the clothes as water absorption is diminished. Previous researches evidenced bentonites could get adhered to cotton fibres giving a softening effect during the washing when used together with the detergent. This is the so-called softergent effect. Fragrances can be absorbed on bentonites surface. So, if adhered on clothing fibres it is reached an increase in the olfactory perception once the clothes are dry. Therefore, it is intended to add into detergents an additive as the bentonite with a fragrance incorporated in order to achieve a softening and perfuming effect amongst the washed products.
- Published
- 2011
33. Lavado de la lana con tensioactivos y microemulsiones de disolvente ecológico: influencia de la dureza del agua
- Author
-
Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, and Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil
- Subjects
Detergents -- Anàlisi ,parasitic diseases ,technology, industry, and agriculture ,Enginyeria química::Indústries químiques::Química tèxtil [Àrees temàtiques de la UPC] ,Washing powders--Testing ,Surface active agents--Industrial applications ,Tensioactius -- Aplicacions industrials ,Enginyeria química::Indústria dels processos químics::Agents tensioactius [Àrees temàtiques de la UPC] ,Wood-pulp--Washing - Abstract
In this work, detersive power was studied after washing a soiled wool fabric with addition of a non-toxic solvent microemulsion to conventional wash formulations with the aim of improving the performance of the conventional washing. The non-toxic solvent used was dimethyl sulfoxide micro-dispersed with an amphoteric surfactant as emulsifier. The fabric was washed with biodegradable non-ionic surfactants such as an alcohol ethoxylate (AE) with 7 m.E.O and an alkyl polyglucoside with 1.4 glucoside groups (APG). The fabric used was EMPA 107 wool (soiled with standard impurities). The non-ionic surfactants were used separately and in mixture in varying proportions for the washes. Given the large amount of impurities in the wool fabric, sodium carbonate and sodium chloride were used to attain a suitable pH to avoid damaging the wool. The fabric was washed at low temperature with water of different hardness (20ºhf, 30ºhf and 40ºhf). In addition, the sequestering agent DTPMP was used to obtain an improvement of detersive power at the hardness of 40ºhf.
- Published
- 2011
34. Apunts de materials per al disseny de productes tèxtils
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Abstract
2014/2015
- Published
- 2014
35. MATÈRIES COLORANTS I PRODUCTES AUXILIARS (Examen 1r quadrimestre, 1n parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2014
36. MATERIALS PEL DISSENY DE PRODUCTES TÈXTILS (Examen 2n quadrimestre, 1r parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2014
37. The detergency of surfactant mixtures and bentonites on cotton fabric
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
The primary aim of this work is to attain improvement of the softness of cotton fabric during the washing process with ecological surfactants. To attain that improvement, sodium bentonite was added to the detergent formulations to produce a softening effect during washing and obtain the so called “soft detergent” effect. Sodium bentonite (a mineral composed mainly of hydrated aluminium silicates) was mixed with the surfactants used in ecological detergents. This product was used with a suitable particle size that, given its large specific surface area, facilitated its deposition on the cotton fabric, producing the desired effect of increasing the softness of the washed fabric. The surfactants used were an anionic surfactant, namely LAS, and two non-ionic surfactants, namely APG and AE, used separately and as mixtures, without co-formulants, to demonstrate their detersive power in one wash and repeated washes, depending on the nature of the surfactants and on their separate mixtures an mixtures in different proportions of anionic and non-ionic surfactants in combination in all cases with a constant concentration of sodium bentonite with two particle sizes. Evaluation was performed of the subjective softness (to the touch) of pairs of samples by several observers and also of changes in whiteness after deposition of the bentonite during washing, Postprint (published version)
- Published
- 2014
38. MATERIALS PEL DISSENY DE PRODUCTES TÈXTILS (Examen 2n quadrimestre, 2n parcial)
- Author
-
Carrión Fité, Francisco Javier and Carrión Fité, Francisco Javier
- Published
- 2014
39. Sonochemically processed cationic nanocapsules: Efficient antimicrobials with membrane disturbing capacity
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Universitat Politècnica de Catalunya. GBMI - Grup de Biotecnologia Molecular i Industrial, Fernandes, Margarida M., Francesko, Antonio, Torrent Burgués, Juan, Carrión Fité, Francisco Javier, Macedo Fernandes, Margarida Maria, Tzanov, Tzanko, Heinze, Thomas, Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Universitat Politècnica de Catalunya. GBMI - Grup de Biotecnologia Molecular i Industrial, Fernandes, Margarida M., Francesko, Antonio, Torrent Burgués, Juan, Carrión Fité, Francisco Javier, Macedo Fernandes, Margarida Maria, Tzanov, Tzanko, and Heinze, Thomas
- Abstract
Bacterial-mediated diseases are a major healthcare concern worldwide due to the rapid spread of antibiotic-resistant bacteria. One strategy to manage the bacterial infections while avoiding the emergence of resistant strains implies specific targeting and disruption of bacteria membranes. This work evaluates the potential of nanostructured biopolymer derivatives, nanocapsules (NCs), to disrupt the bacteria cell walls and effectively kill planktonic microorganisms. Two biopolymers, chitosan and cellulose, were chemically modified to synthesize derivatives with improved cationic character (thiolated chitosan and aminocellulose) prior to their processing into nanocapsules via a one-step sonochemical process. The interactions of NCs, displaying an average size of around 250 nm, with bacteria membrane were evaluated using two membrane models: Langmuir monolayers and liposome bilayers composed of a l-a-phosphatidylglycerol phospholipid extracted from Escherichia coli. NCs possessed improved membrane disturbing capacity in comparison to the nonprocessed biopolymer derivatives, by drastically increasing the monolayer fluidity and inducing more than 50% leakage of a dye inserted in the bilayered liposomes. In addition, membrane disturbance was directly proportional to the NCs cationic charge. Whereas evidence showed that thiolated chitosan and aminocellulose interacted with the bacteria membrane through a “carpet model”, the NCs were found to induce larger surface defects and high local perturbance through a “detergent model”. Importantly, the degree of disruption caused by the biopolymer derivatives and NCs correlated well with the antimicrobial capacity against Escherichia coli, selectively killing bacteria cells without imparting toxicity to human fibroblasts., Postprint (published version)
- Published
- 2014
40. Softening effect of bentonite and redeposition of solid impurities on washed cotton fabric
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
The aim of this work is to propose a contribution to obtain an improvement in the redeposition of solid impurities on cotton fabric during washing with ecological surfactants and also the enhancement of their smoothness. For that purpose, sodium bentonite was added to the detergent formulations to produce a smoothing effect while washing, to obtain what is known as “softergent”. Thus, smoothing with this product, the necessity of adding softener in the last rinse during washing is eliminated, with the savings of softeners and time and more ecological waste water. This was possible given the excellent compatibility of the bentonite with all the components of the detergent. As a water-soluble inorganic salt, bentonite is environmentally friendly. The surfactants used in the detergent formulations were the anionic sodium dodecylbenzene sulfonate (SDBS) and the two non-ionic surfactants, APG and AE with 7 m. EO, which were used separately and in mixtures of different proportions of anionic and non-ionic surfactants. The sodium bentonite (composed mainly of silicates and aluminates) was used with two types of particle size, without surface treatment and with and without ammoniumsilicone softener treatment to show the effect on their behaviour. The redeposition behaviour on the cotton fabric and the smoothness produced after washing with bentonite microparticles in the detergent formulation, depending on use of the surfactants alone or in the different proportions of anionic:non-ionic surfactants were measured. The smoothness of cotton fabrics produced by the bentonite microparticles after washing was evaluated by hand. A relationship between handle and inorganic ash contents was established. Also, the electrical double layer of the bentonites was measured in the presence of the surfacants tested, Postprint (published version)
- Published
- 2014
41. Influence of the dye transfer inhibitors for the washing of softened cotton fabric
- Author
-
Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Carrión Fité, Francisco Javier
- Abstract
In this, work the performance of several dye transfer inhibitors (DTI) copolymers (PVP, PVNO and PVNO with PVP) was tested for use as DTIs in washing softened undyed cotton fabric, in the presence of a direct dye in the washing bath, with and without water hardness. Three direct dyes were tested: red, blue and yellow. The detergent used was composed of an LAS anionic surfactant and a non-ionic fatty alcohol ethoxylate surfactant with 7¿m. OE, both separately and in the different molar proportions anionic with non ionic, at a total concentration of 5¿×¿10-3¿ M, and in the presence of zeolite as a builder. Washing temperature was 40°C and washing time was 30¿min. Staining of the softened undyed cotton fabric was assessed as the CIELAB colour differences between the original fabric and the stained fabric after washing.The different DTIs and the dye in the washing bath with and without water hardness were tested, Postprint (published version)
- Published
- 2014
42. Las bentonitas en los detergentes ecológicos
- Author
-
Carrión Fité, Francisco Javier, Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera, and Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil
- Subjects
Enginyeria tèxtil ::Fabricació tèxtil::Acabats tèxtils [Àrees temàtiques de la UPC] ,Cotó -- Acabat ,Bentonite ,Bentonita ,Cotton fabrics ,Enginyeria tèxtil ::Fibres tèxtils::Fibres naturals [Àrees temàtiques de la UPC] - Abstract
Este trabajo tuvo como objetivo principal conseguir una mejora en la suavidad del tejido de algodón en el mismo proceso lavado con tensioactivos ecológicos. Para ello, se añadió bentonita sódica al detergente, con el fin de producir un efecto de suavizado al ser lavado el tejido, pudiéndose obtener el denominado efecto “softergent”. La bentonita sódica (mineral formado por silicatos de aluminio hidratados) se mezcló con los tensioactivos utilizados en detergentes ecológicos. Este producto fue utilizado con un tamaño de partícula adecuado, que al poseer una gran superficie específica, facilitó su deposición en el tejido de algodón, produciendo el efecto deseado de aumentar la suavidad del tejido lavado. Los tensioactivos utilizados fueron un aniónico: LAS, y los no iónicos: APG y AE, por separado y en mezcla aniónico con no-iónico, sin coadyuvantes, con el objeto de mostrar su poder detergente durante uno y varios lavados repetidos, en función de la naturaleza de los tensioactivos, y de sus mezclas por separado y en diferentes proporciones de mezcla de tensioactivo aniónico con no-iónico y en presencia, en todos los casos, de una concentración constante de bentonita sódica con dos tamaños de partícula. Se obtuvo la valoración de la suavidad (al tacto) subjetiva por parejas de muestras a partir de varios observadores y también la variación de blancura después de la deposición de la bentonita durante el lavado, la cual se comprobó por imágenes de microscopía electrónica SEM de las fibras de algodón del tejido. The primary aim of this work is to propose an improvement in the smoothness of the cotton fabric during the washing process with ecological surfactants. Sodium bentonite into the detergent formulations was added with the intention of producing a smoothed out effect while the fabric was washed, to obtain the denominated “softdetergent”. The sodium bentonite (composed mainly by hydrated aluminium silicates) was mixed with the surfactants used in ecological detergents. This product, with a suitable particle size was used, having a great specific surface, facilitated its deposition in the cotton fabric, producing an increase in its smoothness (handle) during and after the washing process. The surfactants used in the detergent formulations were: one anionic LAS and the two non-ionics APG and AE separately and anionic with nonionic mixtures, without builders. The detersive effect after one and five repeated washings was shown, in all the cases in presence of one constant concentration of sodium bentonite and for two different particle sizes. The evaluation of the subjective handle by pairs of samples from several observers was obtained, and also the variation of whiteness as a result of the deposition of the bentonite during the washing, which was shown by images of electronic microscopy SEM of the fibers extracted from fabric.
- Published
- 2009
43. Zeta potentials of the cotton in the presence of the surfactants mixture LAS (ionic) with alkyl polyglucoside (non ionic)
- Author
-
Carrión Fité, Francisco Javier
- Subjects
Electrical double layer ,Agents tensioactius ,Enginyeria tèxtil ::Fabricació tèxtil [Àrees temàtiques de la UPC] ,Surfactants ,Alkylpolyglucoside ,Surface active agents ,Tensioactifs ,Mezclas de tensioactivos ,Mixture of surfactants ,Enginyeria tèxtil ::Fibres tèxtils::Fibres naturals [Àrees temàtiques de la UPC] ,Doble capa eléctrica ,LAS ,Fibres tèxtils -- Indústria i comerç ,Double cape électrique ,Alquilpoliglucósido ,Mélange de tensioactifs ,Tensioactivos ,Potentiel zêta ,Potencial zeta ,Zeta potencial ,Alquilpolyglucoside - Abstract
Con objeto de obtener buenos niveles de biodegradabilidad y toxicidad en los productos tensioactivos, han aparecido en el mercado los alquilpoliglucósidos (APGs). Estos tensioactivos no iónicos, obtenidos a partir de sustancias naturales, son 100% biodegradables y resultan muy interesantes para su aplicación en el lavado. La doble capa eléctrica del tejido, caracterizada como potencial zeta, resulta un parámetro influyente en la deposición de impurezas sobre el mismo durante el lavado, por lo que resulta útil su estudio. El potencial zeta es dependiente de la carga de superficie del tejido y del medio polar en que esté inmerso. En este trabajo, se tuvo como objetivo la determinación de los potenciales zeta de un tejido de algodón, sin teñir, y teñido con tres diferentes colorantes directos. Con objeto de obtener la influencia del estado superficial del tejido se hizo variar el potencial zeta del tejido mediante una resina de apresto del tipo DMDHEU o con un suavizante de un compuesto microemulsionado de aminosilicona. La influencia del medio, en tales potenciales zeta, se determinó en función de la presencia de diversos tensioactivos: aniónico, no iónico y sus mezclas. Los tensioactivos utilizados fueron el dodecilbencenosulfonato sódico LAS (aniónico) mezclado con un alquilpoliglucósido (APG) no-iónico), para obtener su influencia en la doble capa eléctrica en función de varias proporciones de mezcla aniónico/no iónico y de diferentes concentraciones totales de las mismas. With object to obtain good levels of biodegradability and ecotoxicity, they have appeared in the market the alkyl polyglucosides (APGs). These ionic surfactants, obtained from natural substances, are biodegradable 100% and they are very interesting for their application in the washing. The double electrical layer of the fabric characterised by zeta potential, is a parameter, has influence in the deposition of impurities on fabric during washing, for this reason its study is useful. The variation of the superficial state of the fabric and the ionic solution in which it is immersed produces changes in their zeta potential. In this work, the determination of the potentials zeta of a cotton fabric, without dyeing, and dyed with three different direct dyes was an aim. To obtain the influence of the superficial state of the fabric in the variation of the zeta potential a resin of type DMDHEU or a softening treatment of the fabric with microemulsion of ammonium silicone was treated. The influence of the surfactants in the electrical double layer was determined in function of the anionic, nonionic and its mixtures. The surfactants the sodium dodecilbenzenesulfonate (LAS) (anionic) mixed with alkylpolyglucoside (APG) (non-ionic), in different proportions at different totalconcentrations were used. Dans le but d'obtenir de bons niveaux de biodegradabilité et de toxicité dans les produits tensioactifs, les alquilpolyglucosides sont apparus dans le marché. Ces tensioactifs non ioniques, obtenus à partir de substances naturelles, sont 100% biodégradables et sont très intéressants pour son application dans le lavage. La double cape électrique du tissu, caractérisée comme potentiel zêta, est un paramètre influent dans la déposition d'impuretés sur le même, pendant le lavage. Par conséquent son étude est utile. Le potentiel zêta est dépendant de la charge de surface du tissu et du moyen polaire dans lequel il soit immergé. Dans ce travail, ont eu come objective la détermination des potentiels zêta d'un tissu de coton, sans teindre, et teint avec trois différents colorants directs. Dans le but d'obtenir l'influence de l'état superficiel du tissu on fait varier les potentiels zêta du tissu moyennant une résine de préparation du type DMHDEU ou avec un adoucissant d'un composé microemulsioné d’aminosilicone. On a déterminé l'influence du moyen, dans ces potentiels zêta, en fonction de la présence de divers tensioactifs: anionique, non ionique et leurs mélanges. Les tensioactifs utilisés ont été le dodecilbencenosulphonate sodique (LAS) (anionique) mélangé avec un alquilpolyglucoside (APG) non-ionique, pour obtenir leur influence sur la double cape électrique en fonction de plusieurs proportions de mélange anionique/non ionique et de différentes concentrations totales.
- Published
- 2007
44. Influence des mélanges en polyglucoside avec un tensioactif anionique dans le lavage d'un tissu en polyester
- Author
-
Carrión Fité, Francisco Javier|||0000-0002-7933-3945
- Subjects
Lavado ,Washing ,Fibres tèxtils -- Anàlisi ,Agents tensioactius ,Poliglucósido ,Poliester ,Polyester ,Surface active agents ,Tensioactif ,Polyester fibers ,Detergents -- Anàlisi ,Lavage ,Polyglucoside ,Surfactant ,Tensioactivo ,Enginyeria tèxtil ::Indústria tèxtil [Àrees temàtiques de la UPC] ,Poliéster - Abstract
El notable desarrollo de los tensioactivosno iónicos como componentes dominantes en las formulaciones detergentes requiere la comprensión de sus prestaciones durante el lavado, no solamente como productos separados sino también como mezclas binarias con tensioactivo aniónico. Con objeto de obtener buenos niveles de biodegradabilidad y toxicidad han aparecido en el mercado los alquil poliglucósidos (APGs). Estos tensioactivos no iónicos, obtenidos de sustancias naturales, son 100% biodegradables y resultan muy interesantes para su aplicación en el lavado. En este trabajo se presenta el comportamiento del APG: C12-C14 con 1,4 grupos glucósido (no iónico), por separado y en mezcla con LAS, en diferentes proporciones de mezcla de estos tensioactivos aniónico con no iónico, sin coadyuvante, con objeto de mostrar su efecto detergente en el tejido de poliéster, ensuciado previamente con impurezas sólida y líquida (negro de humo y ácido oleico). Asimismo, teniendo en cuenta el sangrado de los tejidos teñidos durante el lavado, se obtuvo la decoloración de poliéster teñido y su correspondiente manchado en el mismo artículo y en materiales textiles blancos (tejido multifibra), al ser lavados al mismo tiempo con tales tensioactivos y sus mezclas, utilizando zeolita como coadyuvante y carbonato sódico. El tejido de poliéster antes de su lavado fue teñido con colorantes dispersos. The remarkable emergence of nonionic surfactants as key components in detergent formulations requires an understanding of their benefits during washing, not only as separate products but also as binary mixtures with anionic surfactants. In order to obtain good levels of biodegradability and ecotoxicity, alkyl polyglucosides (APGs) have appeared on the market. These nonionic surfactants, which are obtained from natural substances, are 100% biodegradable and may be usefully applied to the washing process. In this work we examined the behaviour of the APG C12-C14 with 1.4 glucoside groups (nonionic), separately and in a mixture with LAS, in various proportions and without a builder. The aim was to show its effect as a detergent for washing polyester fabric, which had been previously soiled with solid and liquid impurities (carbon black and oleic acid). By taking the bleed of dyed fabrics into account during washing, it was possible to decolour dyed polyester, soiled white polyester and white textile materials (multifibre fabrics) by washing them at the same time with the abovementioned surfactants and their mixtures and by using builders such as zeolite and sodium carbonate. The poliéster fabric was dyed with dispersed dyes. Le développement remarquable des tensioactifs non ioniques en tant que composants dominants dans les formulations de lessive passe par la compréhension de leurs prestations pendant le lavage, non seulement pris séparément, mais aussi en tant que mélanges binaires contenant un tensioactif anionique. Pour obtenir de bons niveaux de biodégradabilité et de toxicité, les alkylpolyglucosides (APG) ont fait leur apparition sur le marché. Ces tensioactifs non ioniques, tirés de substances naturelles, sont 100 % biodégradables et sont très intéressants, appliqués au lavage. L’étude propose une présentation de l’APG : C12-C14 avec 1,4 groupes glucosides (non ioniques), séparément et en mélange avec du LAS, dans différentes proportions de mélange de ces tensioactifs anionique et non ionique, sans adjuvant, pour montrer l’effet détergent sur le tisú en polyester, préalablement taché avec des impuretés solides et liquides (noir de fumée et acide oléique). En outre, compte tenu du dégorgement des tissus teints pendant le lavage, le polyester teint s’est décoloré et le même article a été taché, de même que les textiles blancs (tissu multifibre), lavés en même temps avec ces tensioactifs et leurs mélanges, en utilisant de la zéolite comme adjuvant et du carbonate de sodium. Le tissu en polyester avant lavage abatí été teint avec des colorants dispersés.
- Published
- 2006
45. Bibliografía. Recensión de libros recibidos
- Author
-
Carrión Fité, Francisco Javier
- Subjects
Enginyeria tèxtil [Àrees temàtiques de la UPC] ,Textile industry -- Bibliography ,Enginyeria tèxtil - Abstract
Recensió dels llibres: Mc Cutcheon's 2006. Emulsifiers & Detergents (North America Edition). Glen Rock: Mc Cutcheon's Division, 2006. 304 p. Mc Cutcheon's 2006. Functional Materials(North America Edition). Glen Rock: Mc Cutcheon's Division, 2006. 376 p. Mc Cutcheon's 2006. Emulsifiers & Detergents (International Edition). Glen Rock: Mc Cutcheon's Division, 2006. 252 p. Mc Cutcheon's 2006. Functional Materials(International Edition). Glen Rock: Mc Cutcheon's Division, 2006. 120 p.
- Published
- 2005
46. Humectation du nylon 6.6 avec un tensioactif anionique, un non-ionique et un mélange des deux
- Author
-
Carrión Fité, Francisco Javier|||0000-0002-7933-3945
- Subjects
nylon ,Agents tensioactius ,humectació ,Enginyeria tèxtil ::Fibres tèxtils [Àrees temàtiques de la UPC] ,Enginyeria tèxtil ::Indústria tèxtil [Àrees temàtiques de la UPC] - Abstract
En la práctica, la humectación está relacionada con el ángulo de contacto en equilibrio del líquido (fase fluida) sobre el sólido (material textil). Cuando esta humectación es dinámica y el sólido se presenta en forma de fibra o monofilamento y, por tanto, con curvatura en la superficie a humectar, la obtención del ángulo de contacto presenta dificultades, dadas sus pequeñas dimensiones y las irregularidades geométricas y de anisotropía. Teniendo en cuenta lo expuesto, este trabajo tuvo como objetivo la determinación de la humectación dinámica de un polímero textil, tal como el Nylon 6.6, en forma de monofilamento de sección circular. Para ello se utilizaron soluciones acuosas de tensioactivos: aniónico, no-iónico y sus mezclas. Los tensioactivos utilizados fueron del tipo aniónico (DBSS) y como tensioactivo no-iónico un alquil poliglucósido de origen natural y sumamente interesante bajo el punto de vista ecológico. Esta humectación fue caracterizada mediante ángulos de contacto de avance y de retroceso, lo que hizo posible la obtención de la histéresis de mojado, lo cual está en conexión con la rugosidad, heterogeneidad química superficial y las interacciones posibles del líquido con la superficie del sólido. In practice, wetting is related to the equilibrium contact angle of the liquid (fluid phase)with the solid (textile material). When the wetting is dynamic and the solid is in the form of a fibre or monofilament, and consequently with curvature of the surface to be wetted, obtaining the contact angle involves certain difficulties, given the small dimensions and the geometric and anisotropic irregularities. Bearing these considerations in mind, the aim of this work was to determine the dynamic wetting of a textile polymer, Nylon 6.6, in the form of a monofilament with a circular cross-section. For this purpose aqueous surfactant solutions were used: anionic, nonionic and mixtures of the two. The anionic surfactant used was DBSS and the nonionic surfactant was an alkyl polyglucoside from natural sources that is particularly attractive from an ecological standpoint. This wetting was characterised in terms of advancing and receding contact angles, allowing us to obtain the wetting hysteresis, which is related to roughness, surface chemical heterogeneity and possible interactions between the liquid and the surface of the solid. Dans la pratique, l’humectation est liée à l’angle de contact en équilibre du liquide (phase fluide) sur le solide (matière textile). Quand cette humectation est dynamique et que le solide se présente sous forme de fibre ou de mono-filament et, par conséquent, avec une incurvation de la surface à humecter, il est difficile d’obtenir l’angle de contact, compte tenu de ses petites dimensions et des irrégularités géométriques et d’anisotropie. Cela étant, l’étude se propose de déterminer l’humectation dynamique d’un polymère textile, tel que le nylon 6.6, sous forme de monofilament à section circulaire. Des solutions aqueuses de tensioactifs ont été utilisées à cet effet : anionique, non-ionique et leurs mélanges. Les tensioactifs utilisés ont été du type anionique (DBSS) et comme tensioactif non-ionique un alkylpolyglucoside d’origine naturelle et extrêmement intéressant du point de vue écologique. Cette humectation a été caractérisée avec des angles de contact d’avance et de recul, ce qui a permis d’obtenir l’hystérèse de mouillage, ce qui est en rapport avec la rugosité, l’hétérogénéité chimique superficielle et les interactions possibles du liquide avec la surface du solide.
- Published
- 2005
47. Editorial con motivo del 50 aniversario de la creación del Instituto de Investigación Textil y de Cooperación Industrial
- Author
-
Carrión Fité, Francisco Javier
- Published
- 2004
48. Influence des sels de magnesium sur la teinture du coton avec des colorants réactifs
- Author
-
Carrión Fité, Francisco Javier
- Subjects
Tints i tenyit ,Cotó ,Colorants ,sals magnèsiques ,Enginyeria química::Indústries químiques::Colorants, pintures i vernissos [Àrees temàtiques de la UPC] ,Enginyeria tèxtil ::Teixits [Àrees temàtiques de la UPC] - Abstract
La tintura del algodón con colorantes reactivos requiere grandes cantidades de sales sódicas inorgánicas, tales como el cloruro y el sulfato. Dadas sus altas solubilidades en agua, es imposible su eliminación en las aguas residuales de tales tinturas por los métodos convencionales. El objetivo de este trabajo fue el mostrar como alternativa el efecto de las sales magnésicas para la reducción de la concentración de sales sódicas en la tintura del algodón con una terna de tres colorantes reactivos. Por tal motivo se seleccionaron las sales inorgánicas: cloruro y sulfato y las sales orgánicas: acetato y citrato para efectuar un estudio comparativo de las mismas por separado y en mezcla con tripolifosfato. The dyeing of cotton with reactive dyes requires large amounts of inorganic sodium salts such as chloride and sulphate. Due to their high solubilities in water, it is impossible to remove them from the waste water produced by these dyes. The aim of this work was to show the effect of magnesium salts as an alternative for reducing the concentration of sodium salts in the dyeing of cotton with a set of three reactive dyes by the conventional methods. For this reason the inorganic salts chloride and sulphate and the organic salts acetate and citrate were selected to carry out a comparative study separately and in a mixture with tripolyphosphate. La teinture du coton avec des colorants réactifs requiert de grandes quantités de sels de sodium inorganiques, tels que le chlorure et le sulfate. Compte tenu de leur haute solubilité dans l’eau, il est impossible de les éliminer dans les eaux résiduelles de ces teintures par les méthodes conventionnelles. Ce travail vise à montrer comme alternative l’effet des sels de magnésium pour la réduction de la concentration des sels de sodium dans la teinture du coton avec une triade de colorants réactifs. C’est pourquoi la sélection a retenu les sels inorganiques chlorure et sulfate et les sels organiques acétate et citrate pour effectuer une étude comparée de ces sels, séparément et en mélange avec du tripolyphosphate.
- Published
- 2004
49. L'importance de la R+D+i dans le future de l'industrie textile
- Author
-
Carrión Fité, Francisco Javier
- Subjects
Teixits i tèxtils -- Innovacions tecnològiques ,Enginyeria tèxtil [Àrees temàtiques de la UPC] ,infraestructures de suport ,plataformes tecnològiques ,Enginyeria tèxtil - Abstract
La innovación tecnológica es fundamental para operar con éxito en el actual entorno de mercado, que es abierto, globalizado y competitivo. Se define la misma y se hace énfasis de su importancia para el futuro del sector textil-confección en España. En los ámbitos de la cadena textil en los cuales la innovación abre nuevas posibilidades se citan los logros en procesos de fabricación de hilados, los textiles técnicos, los nuevos materiales conseguidos a través de las nanotecnologías y las nuevas aplicaciones de los textiles. Se indican algunos artículos textiles inteligentes existentes en el mercado. Las infraestructuras de soporte a la innovación en España se relacionan brevemente. La plataforma tecnológica textil en la C.E. aparece como el programa de visión común para la estrategia futura en la investigación. It is indicated that the technological innovation is fundamental to operate successfully in the present market, which is opened, globalizated and competitive. The innovation is defined and emphasis is made on it importance for future of the sector textile-confection in Spain. In some scopes of the textile chain in which the innovation opens new possibilities mention the new processes of manufacture of yarns, the technical textiles, the new materials obtained thought nanotechnologies and the new applications of the textiles. Existing intelligent textile articles in the market are indicated. Infrastructures of support to the innovation in Spain are mentioned. The Textile Technological Platform in the E.C. appears like the Program of common vision for the future strategy in the research. On indique que l’innovation technologique est fondamentale pour opérer avec succès dans l’actuel environnement de marché, ouvert, globalisé et compétitif. On définit cette dernière et on fait emphase de son importance pour le futur du secteur textile-confection en Espagne. Dans quelques domaines de la chaîne textile dans lesquelles l’innovation ouvre de nouvelles possibilités on cite les nouveaux processus de fabrication de filaments, les techniciens textiles, les nouveaux matériels obtenus à travers les nanotechnologies et nouvelles applications des textiles. La Plate-forme Techno-logique textile dans la C.E., apparaît comme le Programme de vision commune pour la stratégie future de la recherche.
- Published
- 2004
50. Inhibiteurs du transfert de colorant pendant le lavage à partir de tissus en coton teints avec des colorants directs
- Author
-
Carrión Fité, Francisco Javier|||0000-0002-7933-3945 and Espinosa, Eva
- Subjects
Agents tensioactius ,Cotó ,Colorants ,Enginyeria tèxtil ::Fabricació tèxtil::Tintura [Àrees temàtiques de la UPC] ,Enginyeria tèxtil ::Teixits [Àrees temàtiques de la UPC] - Abstract
El objetivo de este trabajo fue el estudio del efecto de tres polímeros de polivilvinilpirrolidona (PVP), de diferente peso molecular y un copolímero de vinilpirrolidona/vinilmidazol (PVP/VI) para su aplicación como DTI (inhibidores de transferencia de colorante). Tales productos fueron utilizados en varias formulaciones de detergente en el lavado repetido de tejido de algodón que fue teñido con diferentes colorantes directos y se aplicó un tratamiento posterior con objeto de mejorar la solidez del colorante. Al mismo tiempo, se comprobó su eficacia para evitar la redeposición de colorante en el tejido sin teñir. Las formulaciones detergentes tuvieron los componentes siguientes: a) Tensioactivo aniónico; b) Mezcla de tensioactivo aniónico con no-iónico; c) La anterior más agente blanqueante y activador de blanqueo; y d) La anterior añadiendo coadyuvantes tales como zeolita y carbonato sódico. Se obtuvieron resultados de las diferencias de color CIELAB del tejido de algodón teñido y sin teñir, tras cinco lavados repetidos, con y sin la presencia de tales polímeros. The objective of this work was to study of the effect of the polymer of polivynilpirrolidone (PVP) of different molecular weight and one copo-lymer of vynilpiyrrolidone/vinylimidazol (VPVP/VI), that act like DTI (dye transfer inhibition), used each one used into various detergent formulations durig the repeated washing of cotton previously dyed with various direct dyes and processed to improve the washing fastness of the dye. At the same time avoiding the redeposition of dye to other fabrics during the washing process. The components of the detergents were the following: a) Anionic surfactant; b) Anionic and non-ionic surfactant; c) Before one plus builders such as zeolite and sodium carbonate. Results of CIELAB colour difference of dyed and dyed cotton fabrics after five washings, with and without the presence of such polymers were studied. L’objectif de ce travail est d’analyser l’effet de trois polymères de polyvinylpyrrolidone (PVP), de poids moléculaires différents, et d’un copolymère de vinylpyrrolidone/vinylmidazole (PVP/VI) qui feront office de DTI (inhibiteurs de transfert de colorant). Ces produits ont été utilisés dans plusieurs formulations de lessive dans le lavage répété d’un tissu en coton, teint avec différents colorants directs, et nous avons appliqué un traitement postérieur pour améliorer la solidité du colorant. En même temps, nous avons vérifié leur efficacité pour éviter la redéposition du colorant sur le tissu non teint. Les formulations détergentes comprenaient les composants suivants : a) Tensioactif anionique; b) Mélange de tensioactif anionique avec un non-ionique; c) Formulation précédente avec un agent blanchissant et un activateur de blanchiment; et d) Formulation précédente avec des co-adjuvants tels que la zéolite et le carbonate de sodium. Nous avons obtenu les résultats des différences de couleur CIELAB du tissu en coton teint et non-teint, après cinq lavages consécutifs, avec et sans les polymères indiqués.
- Published
- 2003
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.