Search

Your search keyword '"Ciechańska, D."' showing total 29 results
Start Over Author "Ciechańska, D."
29 results on '"Ciechańska, D."'

5. Chitosan Microfibrids: Preparation, Selected Properties and Application.

Author

Wawro, D., Ciechańska, D., Stęplewski, W., and Bodek, A.

Subjects
BIOPOLYMERS, CHITOSAN, DRYING, COAGULATION, NONWOVEN textiles
Abstract

Copyright of Fibres & Textiles in Eastern Europe is the property of Sciendo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2006

12. Polysaccharide Blend Fibres Formed from NaOH, N-Methylmorpholine-N-oxide and 1-Ethyl-3-methylimidazolium acetate

Author

Wendler, F., Meister, F., Dariusz Wawro, Wesolowska, E., Ciechańska, D., Saake, B., Puls, J., Le Moigne, N., Navard, P., Centre of Excellence for Polysaccharide Research, Thurlnglan Institute for Textile and Plastics Research, Institute of Biopolymers and Chemical Fibres, Chemical Technology of Wood, University of Hamburg, Institute for Wood Technology and Wood Biology, VTI, Centre de Mise en Forme des Matériaux (CEMEF), MINES ParisTech - École nationale supérieure des mines de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Cellulose solvents, Polymer blends, Polysaccharides, Cellulosic fibre, Calorimetry, Rheology, Ionic liquids, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

Article disponible sur le site de l'éditeur : http://www.fibtex.lodz.pl/article330.html; International audience; The aim of the study was to find new structured biopolymer blends bearing adjustable properties able to produce innovative materials. Apart from cellulose and three solvents (NaOH, N-methylmorpholine-N-oxide [NMMO] and 1-ethyl-3-methylimidazolium acetate [EMIMac]), 15 different polysaccharides were chosen to study the interactions ofpolysaccharides or their mixtures in solutions, as well as the solid state after forming. Dissolution screenings yielded promising polysaccharides, which were used for the preparation of cellulose/ polysaccharide solutions and subsequently for the shaping of blends with cellulose. The solubility and miscibility were evaluated by microscopy, DSC, particle analysis and rheology. Polysaccharides with a structure similar to that of cellulose, e.g., xylan, carrageenan or cellulose carbamate were not miscible, showing globular morphologies, whereas high-molar and side chains containing polysaccharides such as xanthan or tragacanth gum form co-continuous morphologies. The forming of blend fibres was nevertheless possible for all three solvents. The textile-physical properties of the blend fibres were slightly decreased compared to those of the unmodified fibre, in which fibres from NMMO and EMIMac had the highest performance. The presence of blended polysaccharides in the fibres produced was verified by residue sugar analysis, in which the highest amounts occurred for EMIMac fibres.

29. An in vivo biocompatibility study of surgical meshes made from bacterial cellulose modified with chitosan.

Author

Piasecka-Zelga J, Zelga P, Szulc J, Wietecha J, and Ciechańska D

Subjects
Animals, Guinea Pigs, Rabbits, Rats, Rats, Wistar, Cellulose chemistry, Cellulose pharmacology, Chitosan chemistry, Chitosan pharmacology, Gluconacetobacter xylinus chemistry, Materials Testing, Surgical Mesh
Abstract

Bacterial cellulose modified with chitosan (MBC) is an innovative biomaterial used in regenerative medicine which may potentially improve treatment outcomes mesh for hernia repair surgery by facilitating better absorption in native tissue with less risk of mesh-related infections. The aim of the present study was to evaluate the biocompatibility of mesh based on MBC, and determine whether immunological reactions occur due to hypersensitivity to the implants. Forty five Imp:WIST rats were randomly assigned to be implanted with one of three mesh types: simple polypropylene mesh (n = 15), mesh modified by bacterial cellulose only (n = 15) and MBC mesh (n = 15) and evaluated after one and three months following intramuscular implantation. For MBC mesh, basic toxicological studies, i.e. Acute Dermal Irritation, Intradermal Reactivity and Acute Sensitization (GPMT), were also carried out on 9 Imp:BN albino rabbits and 15 Imp:D-H guinea pigs. The lowest immune response and the highest degree of fibroplasia were observed for MBC mesh both after one and three months after implantation. Toxicological studies classified the tested MBC mesh as a barely perceptible irritant with no signs of sensitization or allergic reactions observed during the studies. The findings indicate that MBC mesh does not irritate, does not sensitize and does not cause hypersensitivity in the implant site, and therefore presents a low risk of provoking such reactions in humans., (Copyright © 2018 Elsevier B.V. All rights reserved.)

Published
2018
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results