还原法与离子液体溶解法制备羊毛角蛋白膜  

Preparation of wool keratin membranes prepared by ionic liquid method and reduction C method

作　　者：张恒[1] 李戎[1] 王魁[1] 菅应凯 马吉宏[1] 

机构地区：[1]东华大学国家染整工程技术研究中心,上海201620

出　　处：《纺织学报》2015年第6期55-59,76,共6页Journal of Textile Research

基　　金：十二五科技支撑计划项目(2012BAK30B03)

摘　　要：为提高羊毛角蛋白的提取率和应用性能,采用离子液体和羊毛预处理-还原C法2种途径溶解羊毛,并且通过不同方法获得再生羊毛角蛋白膜,对比了2种方法得到的再生角蛋白的性能和溶解率。研究发现利用改进的还原C法提取角蛋白,羊毛溶解率超过86%。再生角蛋白膜的红外测试结果表明,离子液体溶解再生羊毛角蛋白膜分子的部分二硫键被氧化而断裂;X射线衍射测试结果表明,离子液体溶解法所获取的再生羊毛角蛋白膜分子构象由α-螺旋结构转变成β-折叠结构,而改进的还原C法再生羊毛角蛋白膜保留了部分α-螺旋结构。In order to improve the extraction rate and application performance of wool keratin membrane, wool was dissolved by two methods including ionic liquids method and pretreatment-reduction C method （reduction C） , wool keratin membrane were regenerated through different channels, and the performance and dissolution rate of wool keratin membranes obtained by the two method were compared. Compared to ionic liquids method, the solubility of wool fibers by the pretreatment-Reduction C method is much higher, over 86%. It is indicated from the results of FT-IR that part of disulfide bonds was broken during the dissolution by ionic liquid. It can be seen from X-ray diffraction data that the regenerated membrane by ionic liquids method exhibited a 13-sheet structure and the disappearance of the a-helix structure, while part of or- helix structure was remained if the keratin was dissolved by the pretreatment-Reduetion C method.

关 键 词：羊毛 角蛋白膜 离子液体 还原C法 

分 类 号：TS102.31[轻工技术与工程—纺织工程]