摘要
为开发pH响应变色智能纺织品,以异佛尔酮二异氰酸酯为硬段、聚乙二醇1000为软段、1,4-丁二醇为扩链剂、刚果红为发色体,制备了具有pH响应变色功能的水性聚氨酯高分子染料,并将其用于棉织物涂层。通过傅里叶红外光谱、紫外-可见光光谱等表征该高分子染料的结构及颜色特征,并详细探讨了该高分子染料及其涂层织物的pH响应变色性能。结果表明,刚果红高分子化后的最大吸收波长存在12 nm的红移。随着pH值降低,由于刚果红中氨基质子化并转变为醌式结构,高分子染料溶液的最大吸收波长由510 nm迁移至605 nm,吸收峰峰形变宽,颜色由红色变成蓝紫色。另外,该高分子染料涂层棉织物在pH值小于3的环境中逐渐变成蓝色,呈现出显著的pH响应变色行为、较高的变色灵敏度、良好的可逆性及pH响应长期稳定性,且能够循环使用于染色废水检测。
A waterborne polyurethane polymeric dye was prepared with isophorone diisocyanate as hard segment,polyethylene glycol 1000 as soft segment,1,4-butanediol as chain extender,and congo red as chromophore,respectively.And then,the waterborne polyurethane polymeric dye was applied onto cotton fabrics via coating to develop a smart textile with pH responsive property.The structures and color properties of the polymer dye were investigated by Fourier transform infrared spectroscopy and UV-Vis spectrum.Also,the pH responsive properties of the polymer dye and its coated cotton fabrics were discussed in detail.Results show that the maximum absorption wavelength of the polymeric dye shows a bathochromic shift of 12 nm.As the pH of the polymeric dye solution decreases,its maximum absorption wavelength shifts from 510 nm to 605 nm and the peak widens,accompanied with the color changing from red to bluish violet,because the structure of congo red after amino protonation transfers into quinoid structure.In addition,the polymeric dye coated cotton fabric gradually turns blue at pH3,shows significant pH responsive behavior,high sensitivity,good reversibility and long-term stability,and can be repeatedly applied in testing dyeing wastewater.
作者
冒海燕
朱淼
朱雪峰
郭子怡
廖成成
何雪梅
宋晓蕾
MAO Haiyan;ZHU Miao;ZHU Xuefeng;GUO Ziyi;LIAO Chengcheng;HE Xuemei;SONG Xiaolei(School of Textile&Clothing,Yancheng Institute of Technology,Yancheng 224051,Jiangsu,China;Fujian Key Laboratory of Novel Functional Textile Fibers and Materials,Fuzhou 350108,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2023年第9期214-219,共6页
Materials Reports
基金
江苏省自然科学基金(BK20191045)
盐城工学院校级科研项目(xjr2019030)
纺织服装福建省高校工程研究中心开放基金(MJXY-KF-201906)
福建省自然科学基金(2020J0849)。
