现代纺织技术2025，Vol.33Issue(7)：74-81,8.DOI:10.12477∕j.att.202410012
双吖丙啶型活性分散染料对涤纶的染色性能
Dyeing properties of diazirine-type reactive disperse dyes on polyester fabrics
摘要
Abstract
Forming robust covalent bonds between dyes and fibers is an effective strategy to address the issue of thermal migration in disperse dyes.The emergence of diazirine-type dyes in recent years,which form reactive carbene intermediates upon high-temperature initiation and can undergo chemical reactions with the C-H bonds on polyester fibers,offers the potential to establish dye-fiber covalent bonds.The purpose of this article is to provide insights for the development of high-performance diazirine dyes through studying the dyeing process of two synthesized diazirine dyes on polyester fabrics.Initially,two diazirine-type blue dyes,D1 and D2,were synthesized through coupling reactions between aniline derivatives containing diazirine structures and the corresponding diazonium salts.Subsequently,the dyes were applied to dyeing polyester fabrics using a high-temperature and high-pressure dyeing method.Various parameters,including dye uptake,color depth of the dyed fabrics,fixation rate,dye migration rate,and color fastness,were tested and analyzed to ascertain the reactivity of diazirine dyes towards polyester fibers. The absorption spectrum test results showed that the maximum absorption wavelengths of dyes D1 and D2 in N,N-dimethylformamide were located at 584 nm and 601 nm,respectively,with corresponding molar extinction coefficients of 35,800 L/(mol·cm)and 35,200 L/(mol·cm).The thermogravimetric and DSC curves showed that dye D1 exhibited better thermal stability than dye D2,which would be beneficial for maintaining the stability of the diazirine dye molecules during the dyeing process.In dyeing polyester fabrics using high-temperature and high-pressure dyeing method under a dye concentration of 1%(o.w.f.),the dye uptake rates of D1 and D2 were 93.3%and 85.9%,respectively.The corresponding K/S values of the dyed fabrics were 17.1 and 15.0,with fixation rates of 59%and 36%,dye migration rates of 8.2%and 20.4%,and color fastness ratings to soaping,rubbing,sublimation,and thermal migration reaching 4 to 5 grades or above.Dyeing experiments conducted at different holding temperatures also confirmed that the reaction effect between dye D1 and the fiber improved more significantly than that of dye D2 as the temperature increased.The dyeing rate curves indicated that dye D1 adsorbed onto the fiber faster than dye D2.This would lead to a much higher reaction rate between dye D1 and the fiber during the holding stage compared to dye D2. From the above results,it can be concluded that diazirine dyes with better stability and faster adsorption and dyeing properties can achieve relatively better fixation performance on polyester fabrics.关键词
活性分散染料/双吖丙啶/涤纶/热迁移/染色机理Key words
reactive disperse dye/diazirine/polyester/thermal migration/dyeing mechanism分类
化学化工引用本文复制引用
张思嘉,江华,易玲敏..双吖丙啶型活性分散染料对涤纶的染色性能[J].现代纺织技术,2025,33(7):74-81,8.基金项目
国家自然科学基金项目(22278377) （22278377）
浙江省自然科学基金项目(LY22B060005) （LY22B060005）
浙江理工大学基本科研业务费项目(24202101-Y) （24202101-Y）
