氯化钙-甲酸溶解体系再生丝素长丝的制备及其性能  

Preparation and properties of regenerated silk fibroin filaments using CaCl_2-formid acid system

作　　者：吴惠英[1,2] 左保齐[2,3] 

机构地区：[1]苏州经贸职业技术学院,江苏苏州215009 [2]苏州大学纺织与服装工程学院,江苏苏州215006 [3]现代丝绸国家工程实验室(苏州),江苏苏州215123

出　　处：《纺织学报》2016年第2期1-6,共6页Journal of Textile Research

基　　金：江苏省应用基础研究计划项目(BK20141207);苏州市应用基础研究计划项目(SYG201431);中国纺织工业联合会科技指导性项目(2015009);苏州经贸职业技术学院自然基金项目(KY-ZR1401)

摘　　要：为改善再生丝素长丝力学性能差的问题,选用氯化钙-甲酸溶解体系获得丝素溶液并采用湿法纺丝技术制备再生丝素长丝。研究结果表明:与传统的三元溶剂溶解丝素至分子水平有所不同,氯化钙-甲酸可在常温条件下溶解蚕丝,更重要的是在溶解过程中保留了原纤结构,在牵伸作用下再生丝素长丝的断裂应力较传统溶解方法提高了近1倍,纤维表面均匀光滑,在放线菌蛋白酶溶液中表现出相对缓慢的降解速度。该方法工艺简单,环境友好、高效,并可实现再生丝素长丝的连续制备。To improve the mechanical properties of the regenerated silk fibroin filaments, CaCl2-formid acid （FA） system was adopted to dissolve degummed silk to obtain silk solution, and regenerated silk fibroin filaments were prepared by wet spinning process. The results indicated that different from that the present dissolved system can dissolve silk to the molecular level, silk fibroin can be dissolved in CaCl2- FA at room temperature, more importantly, which is characterized by preserving the fibrils structure. The breaking stress of the regenerated fibroin was improved nearly by 1 time after stretching, compared with conventional dissolution methods. The surface of silk fibroin filaments was smooth and uniform, and the degradation speed in protease XIV solution was relatively slow. It is a simple, efficient and environmentally friendly method to achieve continuous production of silk fibroin filaments.

关 键 词：氯化钙-甲酸 丝素 湿法纺丝 原纤结构 性能 

分 类 号：TS141.8[轻工技术与工程—纺织材料与纺织品设计]