GA固胶工艺对茧丝性能的影响  

Influence of sericin fixation by GA on properties of cocoon silk

作　　者：杨媛媛[1] 徐英莲[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018

出　　处：《纺织学报》2014年第3期57-61,67,共6页Journal of Textile Research

基　　金：海宁市产业重点技术攻关项目(20121408)

摘　　要：为提高丝胶的稳定性,采用戊二醛（GA）固胶技术,探讨了GA固胶工艺对茧丝性能的影响.对固胶茧丝回潮率、白度、茧丝蛋白稳定性、力学性能及茧丝导热系数、红外光谱等性能进行测试和分析,结果表明：GA固胶有效地减小了丝胶蛋白的水溶性,提高了茧丝的稳定性;固胶茧丝的公定回潮率有所下降,下降幅度在1％ ～4％之间;断裂强力、断裂伸长率均有所增加,初始模量有所下降;导热系数变化不大,仍能保持良好的保暖性;红外光谱特征吸收峰的一些特征峰的峰形、峰位、峰高稍有改变,某些特征峰的波数发生了位移,说明固胶后茧丝分子结构发生了一定程度的变化.To improve the stability of sericin protein, the research adopted glutaraldegyde （GA） as fixation agent and investigated the effects of sericin fixing treatment on the properties of silk. The moisture regain, whiteness, silk sericin protein stability, mechanical properties and the coefficient of thermal conductivity, the infrared spectra of the cocoon silk after the sericin fixing were analyzed. The experimental results show that sericin fixing by GA can effectively reduce the water solubility and improve the silk protein stability. The moisture regain is declined with a margin from 1% to 4%. The breaking strength and elongation at break are increased; while the initial modulus is declined. The coefficient of thermal conductivity of the cocoon silk changes very little, it can still maintain good warmth retention property. Some changes exist on peak shape, peak position and peak height of the characteristic peak of infrared spectra after sericin fixing and the shift of wave number of some characteristic peak has occurred. The results prove that the molecular structure of cocoon silk has made some changes.

关 键 词：GA固胶 丝胶 稳定性 导热系数 

分 类 号：TS141.8[轻工技术与工程—纺织材料与纺织品设计]