Relationship between wettability of cotton and dyeing properties of reactive dyes in a non-aqueous medium system

IF 2.2 4区工程技术 Q3 CHEMISTRY, APPLIED

Coloration Technology Pub Date : 2024-12-15 DOI:10.1111/cote.12802

Zhengkai Wang, Hongjuan Zhang, Bingyu Dai, Yanliang Zhang, Jiping Wang

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引用次数: 0

Abstract

Herein, we initially used sodium hydroxide to pretreat cotton fabric to obtain different wettability. Then the non-aqueous dyeing system was applied to the eco-friendly dyeing and washing process of cotton fibre. Meanwhile, Fourier-transform infrared (FTIR) spectrometry and zeta potential analysis were performed to analyse the difference of cotton fibres before and after pretreatment. Furthermore, the effect of pretreatment on the adsorption behaviour was investigated by molecular dynamic (MD) simulations. Compared with control cotton, an approximate increase of 23.0% in the colour strength (K/S) value was achieved. Findings from FTIR and zeta potential showed that the number of available hydroxyl groups of cotton involved in the dyeing increased after pretreatment. MD simulations demonstrated reactive dye molecules showed a faster adsorption behaviour on the fibre surface with good wettability. It was attributed to the increased interaction energy between dye molecules and cotton fibres. Therefore, improving the cotton fabric's wettability is an effective way to improve the utilisation rate of reactive dyes in a non-aqueous medium dyeing system.

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非水介质体系中棉花的润湿性与活性染料染色性能的关系

本文首先用氢氧化钠对棉织物进行预处理，以获得不同的润湿性。然后将非水染色系统应用于棉纤维的环保型染色和洗涤工艺。同时，采用傅里叶变换红外光谱法（FTIR）和zeta电位法分析预处理前后棉纤维的差异。此外，通过分子动力学（MD）模拟研究了预处理对吸附行为的影响。与对照棉相比，染色强度（K/S）值提高了约23.0%。红外光谱（FTIR）和zeta电位分析结果表明，预处理后棉花参与染色的有效羟基数量增加。MD模拟表明，活性染料分子在纤维表面表现出更快的吸附行为，具有良好的润湿性。这是由于染料分子和棉纤维之间的相互作用能增加。因此，提高棉织物的润湿性是提高活性染料在非水介质染色体系中利用率的有效途径。

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

Coloration Technology 工程技术-材料科学：纺织

CiteScore

3.60

自引率

11.10%

发文量

审稿时长

4 months

期刊介绍： The primary mission of Coloration Technology is to promote innovation and fundamental understanding in the science and technology of coloured materials by providing a medium for communication of peer-reviewed research papers of the highest quality. It is internationally recognised as a vehicle for the publication of theoretical and technological papers on the subjects allied to all aspects of coloration. Regular sections in the journal include reviews, original research and reports, feature articles, short communications and book reviews.