HRP催化降解淀粉与HPA-CAE接枝共聚物的制备及性能  

Preparation and Properties of Graft Copolymer of Degraded Starch and HPA-CAE with HRP Catalysis

作　　者：吕生华[1] 闫小亮[1] 侯明明[1] 弓瑞[1] 

机构地区：[1]陕西科技大学资源与环境学院,陕西西安710021

出　　处：《精细化工》2011年第9期893-898,共6页Fine Chemicals

基　　金：国家自然科学基金项目(20876091);陕西省自然科学基金项目(SJ08B06);陕西科技大学研究生创新基金资助~~

摘　　要：用丙烯酸羟丙酯与柠檬酸发生酯化反应合成丙烯酸羟丙酯柠檬酸酯(HPA-CAE),在辣根过氧化酶(HRP)/H2O2/乙酰丙酮(ACAC)体系引发下,HPA-CAE与降解淀粉发生接枝共聚反应。研究了HRP、H2O2、ACAC和HPA-CAE用量对共聚物接枝效率(GE)和接枝率(GP)的影响,结果表明,50 g酶降解淀粉(质量分数15%)与13.9 gHPA-CAE在HRP(6.4 mg)/H2O2(4.7 mL)/ACAC(1.2 g)催化下发生共聚反应为最适反应条件。用FTIR和NMR表征了接枝共聚物的结构。应用结果表明,该共聚物复鞣革手感柔软、粒面平细和厚度均匀。Hydroxypropyl acrylate-citrate （HPA-CAE） was prepared by esterification of citric acid and hydroxypropyl acrylate. Then a graft copolymer was synthesized by copolymerization of degraded starch and HPA-CAE using horseradish peroxidase （ HRP）/H2O acetylacetone （ ACAC ） as catalyst. The effect of amount of HRP, H202, ACAC and HPA-CAE on grafting efficiency （GE） and grafting percentage （GP） was investigated. The optimum graft copolymer was synthesized by graft copolymerization of 50 g degraded starch（mass fraction 15% ） with 13.9 g HPA-CAE in the presence of 6.4 mg HRP/4.7 mL H202/1.2 g ACAC. The application results show that the retanned leather possesses the merits of soft feeling, fine grain and uniform thickness.

关 键 词：辣根过氧化物酶 酶促聚合 接枝共聚 鞣剂 皮革化学品 

分 类 号：TQ314.24[化学工程—高聚物工业]