氨基蒽醌的重氮化及其对蚕丝素的偶合修饰染色性能

Diazotization of aminoanthraquinone and coupling modification dyeing property of its diazonium salt to silk fibroin

为拓展蚕丝素的染色技术,通过制备1-氨基蒽醌重氮盐,并基于偶合反应机制,实现对蚕丝素酪氨酸残基的修饰着色。结果表明,1-氨基蒽醌重氮盐偶合修饰染色蚕丝素纤维可获得较高的表观颜色深度K/S值,同时,预浸碱工艺有利于重氮盐对蚕丝素的偶合修饰着色反应;偶合修饰染色具有良好的匀染性、干湿摩擦及耐洗色牢度,经DMF剥色,染色蚕丝素纤维K/S值剥除率低于6%;且偶合修饰染色有利于对纤维强力的保护。

In order to expand dyeing technology of silk fibroin,the diazonium salt of aminoanthraquinone was prepared,and the modified dyeing was carried out based on coupling reaction between diazonium salt and tyrosine residues in silk fibroin.The results showed that a higher surface color depth K/Svalue will be obtained based on modification dyeing process.Meanwhile,when silk fabric was treated through alkali pretreatment process,the coupling dyeing reaction was significantly enhanced,and the color fastness including dry and wet rub fastness and wash fastness were good.The K/Svalue stripping rate of silk from coupling dyeing process was less than 6% after stripped by DMF.Besides,the strength of silk fabric was effective protected in the coupling modification dyeing process.