乙烯基类聚合物接枝水解胶原蛋白复鞣填充剂的制备及应用  

Synthesis and Application of Hydrolyzed Protein Grafted with Vinyl Polymer Retanning and Filling Agent

作　　者：高党鸽[1] 吕秀娟[1] 马建中[1,2] 陈柱平[1] 李运[1] 

机构地区：[1]陕西科技大学资源与环境学院,陕西西安710021 [2]教育部轻化工助剂化学与技术重点实验室,陕西科技大学,陕西西安710021

出　　处：《中国皮革》2013年第1期34-37,43,共5页China Leather

基　　金：国家重点基础研究发展计划(973计划前期研究专项)(2011CB612309);国家自然基金青年科学基金项目(21104042);陕西省自然科学基础研究计划青年人才项目(2011JQ6009);陕西科技大学研究生创新基金

摘　　要：采用乙烯基类单体对水解胶原蛋白进行接枝共聚改性,制备了蛋白复鞣填充剂。通过红外光谱(FT-IR)和热重分析(TG)对改性前后的水解胶原蛋白结构和热稳定性进行表征,并将制备的蛋白复鞣填充剂应用于绵羊服装革复鞣工序,对坯革增厚率及物理机械性能进行了测定。FT-IR结果表明:乙烯基类单体在水解胶原蛋白多肽链上发生了接枝聚合。TG结果表明:通过接枝共聚,水解胶原蛋白的热稳定性有一定提高。复鞣应用结果表明:采用蛋白复鞣填充剂复鞣后坯革的增厚率达15.1%,抗张强度为14.9N/mm2,撕裂强度为51.2N/mm,断裂伸长率为78.3%,物理机械性能均达到服装用革行业标准,并能赋予坯革良好的丰满性和柔软性。Hydrolyzed protein was modified with vinyl monomers by graft - copolymerization, to prepare protein retanning and filling agent. The structures before and after modified hydrolyzed protein were investigated by fourier transform infrared spectrosco- py （ FT - IR） and the thermal stability was characterized by thermogravimetric analysis （TG）. The prepared protein retanning and filling agent applied in retanning process of garment - leather of sheep, and then the thickening rate and the physical and mechani- cal properties of the leather were determinated. The FT - IR results show that vinyl polymer is grafted on the polypeptide chains of hydrolyzed protein and the TG results show that the thermal stability of hydrolyzed protein has improved by graft - copolymeriza- tion. The results of retanning application show that the thickening rate is 15.1%, the tensile strength is 14.9N/mm2, the tear strength is 51.2N/mm, the elongation at break is 78.3%, the physical and mechanical properties of the leather retanned with pro- tein retanning and filling agent reaches to the leather garment industry standard, and the retanned leather is softness and fullness.

关 键 词：水解胶原蛋白 乙烯基类聚合物 接枝共聚 蛋白复鞣填充剂 

分 类 号：TS529.2[轻工技术与工程—皮革化学与工程]