调节纤维素的表面电荷和反应性,通过四元化改性来实现无盐的反应性染色工艺
Lei Wang1, Beibei Xie1, Hanchang Hu2
1Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, China.
International journal of biological macromolecules
|September 29, 2024
概括
四次性氨盐结构影响了电离子棉花的结构.
科学领域:
- 材料科学 材料科学 材料科学
- 织品化学 织品化学
- 表面化学 表面化学
背景情况:
- 关于四级盐 (QAS) 结构对阳离子棉属性的影响的研究有限.
- QAS结构影响静电吸引力和基反应性,对反应性染料吸附,扩散和固定至关重要.
研究的目的:
- 研究QAS结构如何影响静电吸引力,基反应性和阴阳性棉花的染色特性.
- 确定最佳的QAS结构,以增强反应性染料固定.
主要方法:
- X射线光电子光谱 (XPS) 用于分析表面电荷.
- 分子动力学 (MD) 模拟以评估染料分子的移动性.
- 用高斯模拟来研究氧基活性.
- 用不同的QAS结构进行染色实验.
主要成果:
- 增加QAS基链长度增强了正电荷和静电吸引力.
- 较长的基链 (octadecyl) 降低了染料分子的移动性,阻碍了扩散.
- 较短的基链 (hexyl) 改变了基活性,并创造了新的活性位点,改善了固定.
- 用 (3-chloro-2-hydroxypropyl) -dimethyl-octadecylazanium化物 (CT-8) 处理的阴阳性棉花显示出高染料吸收 (91.84%) 和固定 (88.38%).
结论:
- QAS结构显著影响了阴阳性棉花的染色性能.
- 优化QAS结构,特别是基链长度和功能组,是改善反应性染料固定的关键.
- CT-8处理为棉花的反应性染色提供了卓越的结果.
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