湿热工艺对桑蚕丝纤维性能的影响  

Effect of moist-heat treatment on the properties of bombyx mori silk fibers

作　　者：牛犁[1] 崔荣荣[1] 乔辉[1] 高卫东[1] 

机构地区：[1]江南大学纺织服装学院生态纺织教育部重点实验室,江苏无锡214122

出　　处：《功能材料》2015年第10期10134-10137,10143,共5页Journal of Functional Materials

基　　金：江苏省产学研联合创新资金-前瞻性联合研究资助项目(BY2014023-23);生态纺织教育部重点实验室(江南大学)开放课题资助项目(KLET1301;KLET1106)

摘　　要：桑蚕丝(B.mor)是由天然的蚕丝蛋白组成,并可以被光、热、水和微生物等损坏。对湿热工艺诱导桑蚕丝纤维的结构和性能的变化进行了测定,观察发现,在150℃条件下将相对湿度从0%增加到70%会降低其拉伸强度。在一个成熟的环境中引入水可以促进水解降解。丝氨酸和酪氨酸的浓度由于相对湿度增加而增加,这导致了黄度指数的增加。蚕丝纤维的结晶结构没有显示出任何明显的变化,除了产生了少量的结晶副产物。Bombyx mori( B. mor) silk was composed of natural fibroin,and could be attacked by light,heat,water,and microorganisms,etc. The changes of the structure and properties of B. mori silk fiber induced by moist-heat treatment were determined. It was observed that as the relative humidity increase from 0% to 70% at 150 ℃ decrease its tensile strength. Introducing water to the ageing environment promoted hydrolytic degradation. The concentration for serine and tyrosine decreased significantly as the relative humidity increasing,which resulted in increasing in yellowness index.The crystalline structure of silk fiber did not show any significant change except processing a slightly crystallinity arising.

关 键 词：相对湿度 桑蚕丝 恶化 拉伸强度 黄度指数 

分 类 号：TQ342.94[化学工程—化纤工业]