Deep eutectic solvent as a solution for polyester/cotton textile recycling.

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management Pub Date : 2025-10-08 DOI:10.1016/j.wasman.2025.115177

Nika Depope, Al Depope, Vasiliki-Maria Archodoulaki, Wolfgang Ipsmiller, Andreas Bartl

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引用次数: 0

Abstract

Global fibre production has expanded rapidly, with polyester and cotton dominating, significantly contributing to textile waste and increasing demand for sustainable solutions. This study presents innovative method to recycle polyester/cotton (PET/CO) blends using hydrophobic deep eutectic solvents (DESs), eliminating the need for toxic chemicals while achieving high dissolution yields. PET was completely dissolved within 5 min, substantially outperforming state-of-the-art methods and facilitating the efficient and selective recovery of both components, PET (97%) and CO (100%). SEM imaging confirmed no morphological changes in cotton fibres after treatment. The thermal stability of the recovered materials was validated using DSC and TGA analyses, while ATR-FTIR spectroscopy indicated no chemical changes. Mechanical testing confirmed recovered cotton's tenacity and elongation are within expected ranges despite showing a decrease of 28% in tenacity and 34% in elongation. Hence, the proposed process provides an efficient and sustainable recycling solution for PET/CO blends, retaining both polymers in a condition similar to virgin materials used in textile manufacturing with minimal processing time.

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涤纶/棉织物回收用深共熔溶剂溶液。

全球纤维生产迅速扩大，聚酯和棉花占主导地位，大大增加了纺织废料和对可持续解决方案的需求。本研究提出了利用疏水深共晶溶剂（DESs）回收聚酯/棉（PET/CO）共混物的创新方法，消除了对有毒化学物质的需求，同时实现了高溶解率。PET在5分钟内完全溶解，大大优于最先进的方法，并促进了PET（97%）和CO（100%）两种成分的高效和选择性回收。扫描电镜成像证实处理后棉纤维没有形态学变化。通过DSC和TGA分析验证了回收材料的热稳定性，而ATR-FTIR光谱显示没有化学变化。力学测试证实，虽然回收棉的韧性下降28%，伸长率下降34%，但韧性和伸长率均在预期范围内。因此，所提出的工艺为PET/CO共混物提供了一种高效和可持续的回收解决方案，以最小的加工时间将这两种聚合物保持在类似于纺织品制造中使用的原始材料的状态。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Waste management 环境科学-工程：环境

CiteScore

15.60

自引率

6.20%

发文量

492

审稿时长

39 days

期刊介绍： Waste Management is devoted to the presentation and discussion of information on solid wastes,it covers the entire lifecycle of solid. wastes. Scope: Addresses solid wastes in both industrialized and economically developing countries Covers various types of solid wastes, including: Municipal (e.g., residential, institutional, commercial, light industrial) Agricultural Special (e.g., C and D, healthcare, household hazardous wastes, sewage sludge)