基于修饰蛋白酶的羊毛织物防毡缩整理  

Wool anti-felting treatment based on modified protease

作　　者：梅静霞 张楠 王强[1] 袁久刚 范雪荣 MEI Jingxia;ZHANG Nan;WANG Qiang;YUAN Jiugang;FAN Xuerong(Key Laboratory of Eco-Textiles(Jiangnan University), Ministry of Education,Wuxi, Jiangsu 214122, China)

机构地区：[1]生态纺织教育部重点实验室(江南大学)

出　　处：《纺织学报》2019年第6期73-78,共6页Journal of Textile Research

基　　金：国家重点研发计划项目(2017YFB0309200);国家自然科学基金项目(51673087,31771039);教育部长江学者和创新团队发展计划项目(IRT_15R26)

摘　　要：针对蛋白酶在羊毛防毡缩整理中对纤维内部损伤大,水解鳞片层中角蛋白能力弱的问题,采用聚乙二醇二羧酸(HOOC-PEG-COOH)和L-半胱氨酸对蛋白酶进行化学修饰以增大蛋白酶体积,从而将水解作用限制在纤维表面,同时使其具有还原角蛋白中二硫键的能力,并借助毡缩率、断裂强力、扫描电子显微镜、接触角、Allworden反应和亚甲基蓝着色法等手段进一步考察了修饰酶处理后羊毛织物的防毡缩效果、纤维表面形貌与润湿性能以及羊毛酶解程度。研究结果表明:在相同处理时间下,修饰酶处理的羊毛织物毡缩率和强力损失明显小于未修饰蛋白酶;修饰酶对羊毛的水解作用仅限于鳞片层且修饰酶对羊毛鳞片的破坏程度大于未修饰蛋白酶。Aiming at the severe damage to wool fiber and weak hydrolysis of keratin in scale caused by protease during wool fabric anti-felting finishing, protease was chemically modified with HOOC-PEG-COOH and L-cysteine to enlarge its volume so as to limit its hydrolysis to the surface of fiber and to be endued with the capability of reducing disulfide bonds in keratin. The anti-felting effect, the surface morphology, wetting properties and the degree of enzymolysis on wool fabric finished with the modified protease were further investigated by the dimensional stability to felting, breaking strength, SEM, contact angle, Allworden reaction and methylene blue coloration. The results show that the dimensional stability to felting and strength loss of wool fabrics finished with modified protease are superior to those of native protease. In addition, the hydrolysis of modified protease is limited to the scale layer of wool, and the modified protease is more harmful than unmodified protease for wool scale.

关 键 词：羊毛 蛋白酶 防毡缩整理 化学修饰 鳞片 角蛋白质 

分 类 号：TS195.5[轻工技术与工程—纺织化学与染整工程]