铜配合物在棉针织物低温中性漂白中的应用

doi:10.13475/j.fzxb.20180201206

纺织学报 ›› 2019, Vol. 40 ›› Issue (01): 91-96.doi: 10.13475/j.fzxb.20180201206

铜配合物在棉针织物低温中性漂白中的应用

吴臣仁, 吕汪洋(), 陈文兴

浙江理工大学纺织纤维材料与加工技术国家地方联合工程实验室, 浙江杭州 310018

收稿日期:2018-02-15 修回日期:2018-08-08 出版日期:2019-01-15 发布日期:2019-01-18
通讯作者: 吕汪洋
作者简介:吴臣仁(1993—),男,硕士生。主要研究方向为棉针织物的低温前处理。
基金资助:
国家重点研发计划项目(2017YFB0309700)

Application of copper complex in low-temperature neutral bleaching of cotton knitted fabrics

WU Chenren, LÜ Wangyang(), CHEN Wenxing

National Engineering Laboratory for Textile Fiber Materials & Processing Technology, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China

Received:2018-02-15 Revised:2018-08-08 Online:2019-01-15 Published:2019-01-18
Contact: Lü Wangyang

摘要/Abstract

摘要：

针对传统棉织物高温漂白过程中能耗过高的问题,采用含亚氨基二乙酸、二价铜离子和吡啶衍生物的铜配合物作为双氧水低温漂白的催化剂,构建棉针织物的新型低温漂白体系。探讨了温度、配合物浓度、漂白时间、烧碱质量浓度、双氧水质量浓度等因素对棉针织物漂白效果的影响,同时研究了木质素模型化合物对香豆酸的降解过程,进而推测出该铜配合物催化剂催化漂白棉针织物的机制。通过单因素试验,得到优化漂白工艺:金属配合物浓度为30 μmol/L, H₂O₂(30%)质量浓度为10 g/L,渗透剂JFC质量浓度为2 g/L,精练剂质量浓度为2 g/L,浴比为1∶30,60 ℃条件下处理60 min。结果表明,在不含碱的中性条件下,经过处理织物白度可达75.03%,且顶破强力损失较小。

关键词: 金属配合物, 双氧水, 低温漂白, 棉针织物

Abstract:

For the excessive energy consumption in the conventional high temperature bleaching processes of cotton fabrics, a copper complex with iminodiacetic acid, bivalent copper ions and pyridine derivatives was used as the catalyst for hydrogen peroxide low temperature bleaching to construct a novel low temperature cotton knitted fabric bleaching system. The effects of temperature, concentration of complex, bleaching time, mass concentration of sodium hydroxide and concentration of hydrogen peroxide mass of on bleaching effect of cotton knitted fabric were discussed. At the same time, the degradation process of p-coumaric acid as the model compound of lignin was studied and the mechanism of catalytic bleaching of cotton knitted fabric in the presence of copper complex catalyst was proposed. By single factor test, the final optimized bleaching process was determined as follows: metal complex of 30 μmol/L, 30% H₂O₂ of 10 g/L, penetrant agent of 2 g/L, scouring agent of 2 g/L, liquor ratio of 1∶30, and bleaching at 60 ℃ for 60 min. Under the neutral condition, the whiteness of the treated fabric can reach 75.03%, and the bursting strength loss is smaller.

Key words: metal complex, hydrogen peroxide, low-temperature bleaching, cotton knitted fabric

中图分类号:

TS192.5

吴臣仁, 吕汪洋, 陈文兴. 铜配合物在棉针织物低温中性漂白中的应用[J]. 纺织学报, 2019, 40(01): 91-96.

WU Chenren, LÜ Wangyang, CHEN Wenxing. Application of copper complex in low-temperature neutral bleaching of cotton knitted fabrics[J]. Journal of Textile Research, 2019, 40(01): 91-96.

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氢氧化钠质量浓度/(g·L^-1)	CIE白度/%	氢氧化钠质量浓度/(g·L^-1)	CIE白度/%
0	75.73	3	70.94
1	69.17	4	71.08
2	70.88

试样	CIE白度/%	润湿性/s	顶破强力/N
精练布	25.21	小于1.0	342.22
对照组试样	31.03	小于1.0	310.14
低温优化工艺试样	75.03	小于1.0	302.48

铜配合物在棉针织物低温中性漂白中的应用

Application of copper complex in low-temperature neutral bleaching of cotton knitted fabrics

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