摘要
在交联剂存在下 ,以硝酸铈铵为引发剂研究了玉米淀粉 (St)与甲基丙烯酸乙醋 (EMA)和丙烯酸丁酯 (BA)进行自交联接枝共聚合成反应的规律 .实验结果表明 ,在引发剂浓度为 9 0×1 0 - 3 mol/L、单体浓度为 1 75mol/L、反应温度为 64℃、反应时间为 3 5h时 ,自交联接枝共聚物的接枝率较高 .通过红外光谱和X 射线粉末衍射对共聚物进行了结构表征 .
The characteristics of self cross liking graft copolymerization of ethyl methacrylate (EMA) and butyl acylate (BA) onto starch (St) were investigated with ceric ammonium nitrate as initiator in the presence of cross linking agent.The results show that the grafting ratio is higher when the concentrations of initiator and monomer are 9.0×10 -3 and 1.75 mol/L respectively,the temperature of reaction is 64 ℃,and the time of reaction is 3.5hrs.The copolymer was determined by IR and X ray diffraction.
基金
河南省科技攻关项目 (子项目 ) (96110 0 12 9)
关键词
淀粉
接枝共聚
自交联
合成
结构表征
化学改性
starch
graft copolymerization
self cross linking
synthesis
structural characterization
