【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与甲基丙烯酸甲酯 (MMA)和丙烯酸乙酯(EA)进行自交联接枝共聚合成反应的规律 ,讨论了引发剂浓度、单体浓度、反应温度和反应时间对接枝共聚反应的影响。实验结果表明 ,在引发剂浓度为 7.0× 10 -3mol/l、单体浓度为 1.30mol/l、反应温度为 5 1℃、反应时间为 2 .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。更多还原

【Abstract】 The self-crosslinking graft copolymerization of methyl methacrylate (MMA) and ethylacrylate (EA) onto starch were investigated with ceric ammonium nitrate as initiator in the presence of crosslinking agent.The optimum synthesis condition was obtained.The results show that the grafting percentage was higher when the concentrations of initiator and monomer were 7.0×10 -3 and 1.30 mol/l respectively,the temperature of reaction was 51℃ and the duration of reaction was 2.5h.The structural characterization of the self-crosslinking graft copolymer was determined by IR and X-ray diffraction.更多还原