金属铜配合物催化双氧水用于棉针织物的低温漂白

doi:10.13475/j.fzxb.20180401208

纺织学报 ›› 2019, Vol. 40 ›› Issue (8): 101-108.doi: 10.13475/j.fzxb.20180401208

金属铜配合物催化双氧水用于棉针织物的低温漂白

张帆¹, 张儒¹, 周文常¹, 周辉², 汪南方¹()

1.湖南工程学院环境催化与废弃物再生化湖南省重点实验室, 湖南湘潭 411104
2.广东溢达纺织有限公司, 广东高明 528500

收稿日期:2018-04-04 修回日期:2019-04-18 出版日期:2019-08-15 发布日期:2019-08-16
通讯作者: 汪南方
作者简介:张帆(1981—),男,讲师,博士。主要研究方向为功能性轻化工助剂。
基金资助:
国家自然科学基金项目(81874332);湖南省高校重点实验室创新平台开放基金项目(17K026)

Low-temperature bleaching of cotton knitted fabrics using hydrogen peroxide in presence of copper complex catalysts

ZHANG Fan¹, ZHANG Ru¹, ZHOU Wenchang¹, ZHOU Hui², WANG Nanfang¹()

1. Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, Hunan Institute of Engineering, Xiangtan, Hunan 411104, China;
2. Esquel Group, Gaoming, Guangdong 528500, China

Received:2018-04-04 Revised:2019-04-18 Online:2019-08-15 Published:2019-08-16
Contact: WANG Nanfang

摘要/Abstract

摘要：

为解决传统高温练漂中棉针织物加工过程能耗高、纤维损伤大的问题,以N,N'-双(3-氨丙基)乙二胺和三(2-氨基乙基)胺分别和水杨醛反应生成席夫碱配体M和N,然后与铜盐反应制备金属铜配合物CuM和CuN用于棉织物低温漂白加工。借助红外光谱仪和核磁共振仪表征金属配合物的化学结构,研究CuM和CuN对双氧水的催化分解特性以及铜配合物-双氧水低温漂白工艺因素对织物白度的影响,并对比探讨了低温漂白与传统高温漂白工艺。结果表明:CuM和CuN催化双氧水(H₂O₂)分解反应级数为1,分解速率常数分别为0.055、0.042 min ^-1,远大于空白体系;采用CuN-H₂O₂体系在70 ℃漂白的棉织物白度为80.0%,与传统工艺相当,毛效和强力保留率优于传统工艺。

关键词: 铜配合物, 催化分解, 低温漂白, 棉针织物, 双氧水

Abstract:

In order to overcome the shortcomings of high energy consumption and great damage on cotton knitted fabrics in the conventional high-temperature bleaching, copper complex CuM and CuN for the cotton fabric low-temperature bleaching process were prepared by reacting N,N'-bis(3-aminopropyl)ethylenediamine and tris(aminoethyl)amine with salicylaldehyde, respectively to produce Schiff base ligands M and N, and reacting with copper salt. The compounds were characterized by infrared spectrometer and nuclear magnetic resonance spectrometer. The influence of CuM and CuN on catalytic decomposition characteristics of hydrogen peroxide and the copper complex-hydrogen peroxide low temperature bleaching process factors on the fabric whiteness were studied. The comparison experiments between low-temperature and conventional bleaching processes were carried out. The order of H₂O₂ decomposition reaction is one and their kinetics of CuM and CuN are 0.055 and 0.042 min ^-1, respectively, much higher than that of the pristine. The whiteness of cotton fabrics bleached by CuN-H₂O₂ system is 80.0% comparable with the conventional process, and the former capillary and strength retention are superior to the later.

Key words: copper complex, catalytic decomposition, low-temperature bleaching, cotton knitted fabric, hydrogen peroxide

中图分类号:

TS195.5

张帆, 张儒, 周文常, 周辉, 汪南方. 金属铜配合物催化双氧水用于棉针织物的低温漂白[J]. 纺织学报, 2019, 40(8): 101-108.

ZHANG Fan, ZHANG Ru, ZHOU Wenchang, ZHOU Hui, WANG Nanfang. Low-temperature bleaching of cotton knitted fabrics using hydrogen peroxide in presence of copper complex catalysts[J]. Journal of Textile Research, 2019, 40(8): 101-108.

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体系	拟合方程	R²	速率常数k/min^-1	半衰期 τ/min
空白	Y=4.304 + 4.08×10^-4X	0.946	4.08×10^-4	1 698.89
CuN	Y=4.461 + 0.055X	0.956	5.50×10^-2	12.60
CuM	Y=4.507 + 0.042X	0.951	4.20×10^-2	16.50

试样	白度/%	毛效(30 min)/cm	强力/N	强力保留率/%
练漂前	45.0	3.0	390.1	—
CuM	76.8	13.0	366.5	93.97
CuN	80.0	16.0	368.0	94.36
空白工艺	72.9	8.6	370.2	94.87
传统工艺	81.0	10.0	358.8	92.00

金属铜配合物催化双氧水用于棉针织物的低温漂白

Low-temperature bleaching of cotton knitted fabrics using hydrogen peroxide in presence of copper complex catalysts

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