Low-temperature dyeing of recycled polyester fibers using COUMARIN as eco-friendly carrier

IF 2.5 4区化学 Q2 Engineering

Chemical Papers Pub Date : 2025-06-21 DOI:10.1007/s11696-025-04177-3

Abdur Rehman, Maryam Naveed, Muhammad Irfan Siyal

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Abstract

In this research, recycled polyester fabric was dyed using agro-sourced eco-friendly natural carrier called coumarin at dyeing process temperature of 100℃. The carrier modified glass transition temperature of recycled polyester fibers resulting in significant coloration process compared with synthetic carrier. Varying the dyeing process parameters such as carrier concentration, dye concentration, and low- and high-molecular-weight disperse dyes showed significant improvement yielding color with coumarin. The high concentration of the natural carrier resulted in significant penetration of the dye molecules proving a promising competitor of synthetic carrier. The overall color fastness properties with respect to rubbing, washing, light, perspiration were obtained from very good to excellent as well as prominent k/s value for the dyed fabric at 4 g/l after carrier dyeing at 100℃. Coumarin does not pollute water and can replace the need for use of synthetic carrier providing environment friendly process for dyeing of recycled polyester fabric.

Graphical abstract

Abstract Image

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以香豆素为环保载体对再生聚酯纤维进行低温染色

本研究以再生涤纶织物为原料，采用农业来源的环保天然载体香豆素进行染色，染色温度为100℃。与合成载体相比，载体改性再生聚酯纤维的玻璃化转变温度对着色过程有显著影响。改变载体浓度、染料浓度、低分子量和高分子量分散染料等染色工艺参数，香豆素能显著提高染料的成色率。天然载体的高浓度导致染料分子的显著渗透，证明它是合成载体的有希望的竞争对手。在100℃条件下，染色织物在4 g/l条件下进行载体染色，其摩擦牢度、洗涤牢度、耐光牢度、耐汗牢度等综合牢度由极好提高到优异，k/s值显著。香豆素不污染水体，可替代合成载体的使用，为再生涤纶织物染色提供了环保工艺。图形抽象

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来源期刊

Chemical Papers Chemical Engineering-General Chemical Engineering

CiteScore

3.30

自引率

4.50%

发文量

590

期刊介绍： Chemical Papers is a peer-reviewed, international journal devoted to basic and applied chemical research. It has a broad scope covering the chemical sciences, but favors interdisciplinary research and studies that bring chemistry together with other disciplines.