用高温高压水精练蚕丝及冻结解冻法回收丝胶的研究  

Studies on Silk Degumming Process in Water at High Temperature and Sericin Recovery by Freezing and Unfreezing Method

作　　者：林俊雄[1] 汪澜[2] 

机构地区：[1]苏州大学生命科学学院,苏州215006 [2]浙江工程学院材料与纺织学院,杭州310033

出　　处：《蚕业科学》2004年第3期280-284,共5页ACTA SERICOLOGICA SINICA

基　　金：浙江省自然科学基金 (编号 2 0 2 0 2 9)。

摘　　要：以粗纤度生丝及普通纤度生丝为材料 ,采用高温高压水精练蚕丝 ,丝胶的平均分子量随温度的增加逐步降低 ,10 0℃时丝胶分子量为 2 0万～ 6 5万 ,130℃时 ,为 13万～ 4 3万以下。蚕丝经 12 0℃精练 1h后脱胶干净 ,且练液无污染 ,利于丝胶的回收利用。采用冻结解冻法回收其丝胶 ,可使 110℃精练的丝胶回收率达 80 %以上 ,温度增高回收率降低 ,冻结次数增多回收率提高。By studying on the common and coarse fibred silk degumming in water at high temperature,the experiment showed that the silk have been effectively degummed in water for 1 h at 120 ℃,and it is an ideal means to obtain sericin whose average molecular weight decreased gradually along with the rise of temperature,and was 200～65 thousands at 100 ℃ while 130～43 thousands at 130 ℃,which has low cost and no contamination.Recovering the sericin by freezing and unfreezing method,the results showed that the recovery rate of sericin is above 80% at 110 ℃ and the increasing of temperature leaded to the decrease of recovery rate,the increasing of freezing times leaded to raise recovery rate of sericin.

关 键 词：蚕丝 精练 高温高压水 丝胶 回收 冻结解冻 

分 类 号：TS143[轻工技术与工程—纺织材料与纺织品设计]