酶解淀粉与醋酸乙烯酯的接枝共聚反应  

Grafting copolymerization of vinyl acetate onto starch modified with enzyme

作　　者：王承学[1] 吴宇鸣[2] 石琳琳[1] 

机构地区：[1]长春工业大学化学工程学院,长春130012 [2]吉林大学化学学院,长春130012

出　　处：《化工新型材料》2015年第2期177-179,共3页New Chemical Materials

摘　　要：研究了以α-淀粉酶为降解剂的酶解淀粉与醋酸乙烯酯接枝共聚反应,利用傅立叶红外谱图及核磁共振谱图进行表征,验证了该反应的发生。探讨了淀粉与醋酸乙烯酯在1∶1的条件下α-淀粉酶、引发剂、乳化剂、反应温度、反应时间等因素对固含量和接枝参数的影响,实验结果表明当淀粉酶用量为625ppm,引发剂用量为1.0%(占淀粉干基质量),乳化剂添加量为3.75%(占淀粉干基质量),反应温度为70℃,反应时间为3.5h时,反应条件最佳。Reaction of grafting copolymerization of vinyl acetate onto starch modified byα-amylase was investigated.Production of the reaction can be proved by FT-IR and NMR.The effects of the dosage ofα-amylase,initiator and emulgator,temperature of reaction,time of the reaction on solid content,grafting efficiency and grafting were studied.The optimal conditions of reaction were as follows：625ppm forα-amylase,1.0%（of starch quality of dry basis）for initiator,3.75%（of starch quality of dry basis）for emulgator,the reaction temperature of 70℃ and the reaction time of 3.5h.

关 键 词：Α-淀粉酶 玉米淀粉 醋酸乙烯酯 接枝共聚 

分 类 号：O631.5[理学—高分子化学]