离子液体在桑蚕丝脱胶及染色中的应用

离子液体1-丁基-3-甲基咪唑六氟磷酸盐BmimCl作为辅助试剂用于桑蚕丝的脱胶及染色过程，考察BmimCl离子液体对蚕丝脱胶率、白度及染色性能的影响。结果表明,在酸性条件下离子液体能显著提高桑蚕丝的白度，有效去除成品桑蚕丝肤色。当离子液体体积含量为5%，在pH值为2，浴比为1∶50，脱胶温度为98℃时脱胶1 h，桑蚕丝的脱胶率约为21%，白度达到80以上。以上述脱胶后的桑蚕丝进行染色，结果表明以离子液体作为辅助试剂脱胶得到的桑蚕丝的色深值达到20，同时其他染色系能也达到常规染色要求。

Application of ionic liquid on degumming and dyeing of silk

Ionic liquid 1-butyl-3-methylimidazolium chloride BmimCl as an assistant agent was applied in degumming and dyeing of silk. The effects of ionic liquid on the degumming rate，degree of whiteness and dyeing performances of silk were investigated. The obtained results indicated that degree of whiteness of silk was obviously enhanced under acidic condition with ionic liquid as assistant agent. The degumming rate was about 21% and degree of whiteness was more than 80 when the volume concentration of ionic liquid was 5%，pH value was 2 and bath ratio was 1∶50 at 98℃ for 1 h. After degumming with ionic liquid the silk was dyed and the dyeing performances were determined. The colour depth（K/S value）was enhanced to 21，dye-uptake was 84%，dry crockfastness was 5，wet crockfastness was 4 and soaping fastness was 5. The obtained dyeing performances of degumming silk with ionic liquid were supper than that of the conventional degumming silk.