蚕丝/PLA交织物的分散染料染色性能

Dyeing behaviors of silk/PLA mixture with disperse dyestuffs

选用25只分散染料对蚕丝/PLA交织物进行染色。通过研究分散染料在蚕丝和PLA两种纤维上的分配以及还原清洗对蚕丝染色量的影响,测定了染色织物的耐洗和耐光色牢度等,结果表明,分散染料尤其是偶氮苯类分散染料,在蚕丝上的上染量普遍高于在PLA上的上染量;碱性和酸性还原清洗的方法很难去除大多数分散染料对蚕丝组分的沾色。大多数分散染料在蚕丝/PLA交织物上具有较好的耐光牢度、耐洗牢度之变色牢度和涤纶沾色牢度,而蚕丝沾色牢度因染料不同而差别较大。可根据牢度要求,合理地选择分散染料对蚕丝/PLA交织物进行染色。

Twenty-five disperse dyes are employed to dye silk/PLA mixture, the distribution of dyes on silk and PLA components and the influence of reduction clearing on color depth of silk are investigated, and the color fastness of the dyeings to washing and light are determined. The amounts of the adsorption of disperse dyes, especially azobenzene ones, on silk are found to be higher than those on PLA. It is difficult for the staining of disperse dyes on silk to be removed by alkaline and acidic reduction clearing. Most disperse dyes on silk/PLA dyeings exhibited good light fastness, low color change in fastness to washing, and low polyester staining of fastness to washing. Silk staining of fastness to washing is dependent on individual dyes. SUk/PLA mixture can be dyed with the reasonably selected disperse dyes according to the demands for color fastness.