1. Recovery of cellulose from polyester/cotton fabrics making use of ionic liquids
- Author
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Villalta, Emma, Riba Moliner, Marta, Lis Arias, Manuel José, Universitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials, Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil, and Universitat Politècnica de Catalunya. POLQUITEX - Materials Polimérics i Química Téxtil
- Subjects
Ionic solutions ,Polyesters ,Cotó ,Cel·lulosa ,Polyester ,Productes químics -- Reciclatge ,Cotton ,Teixits de cotó ,Cotton fabrics ,Ionic liquids ,Polyester fibers ,Chemical recycling ,Polièsters ,Fibres de polièster ,Enginyeria química::Indústries químiques::Química tèxtil [Àrees temàtiques de la UPC] ,Chemicals -- Recycling ,Cellulose ,Solucions iòniques - Abstract
This article refers to the chemical recovery of cellulose from fabrics composed of Cotton (CO)/Polyester (PES) achieved using Ionic Liquids (ILs). Initially, the effect of ionic liquids on the surface of the textile is analyzed, determining the influencing factors related to the entry of IL inside the textile and the chemical mechanism that controls the system. This work considers the influence of the time, ratio, and temperature variables on the system, with the aim of defining which of them has a greater influence on the process. The ability of ionic liquids, specifically 1-Allyl-3-Methylimidazolium Chloride (AmimCl), to dissolve cellulose and subsequently regenerate the material through a simulation of the wet spinning process is evaluated. The responsible for the fiber’s inflation, water or DMSO, has also been another factor of study, analyzing the influence of each solvent and the interactions when in contact with the ionic liquid. Finally, the regenerated substance is characterized by its surface structure using the Scanning Electron Microscope (SEM), its molecular structure by Infrared Spectroscopy Analysis (FTIR), and its thermal stability by Thermogravimetric Analysis (TGA) Objectius de Desenvolupament Sostenible::9 - Indústria, Innovació i Infraestructura
- Published
- 2022