蒙脱土存在下MMA-NPMI-St无皂乳液共聚表观动力学  

KINETICS OF THE SOAP-FREE EMULSION COPOLYMERIZATION OF MMA-NPMI-St IN THE PRESENCE OF MMT

作　　者：王月欣[1] 刘盘阁[1] 龙敬伟[1] 张留成[1] 

机构地区：[1]河北工业大学化工学院,天津300130

出　　处：《高分子材料科学与工程》2005年第4期55-58,共4页Polymer Materials Science & Engineering

基　　金：河北省自然科学基金资助项目(202018)

摘　　要：以2,2′-偶氮二异丁基脒盐酸盐(AIBA)为引发剂,采用无皂乳液聚合法研究了在无机蒙脱土作用下甲基丙烯酸甲酯-N-苯基马来酰亚胺-苯乙烯共聚表观动力学。考察了蒙脱土用量、引发剂浓度、水油比及反应温度对聚合反应速率及产物分子量的影响,结果表明,聚合反应速率及产物分子量均随蒙脱土用量的增加而增加;聚合反应速率与AIBA浓度的1.4次方成正比;共聚反应的表观活化能为124.8kJ/mol。The kinetics for the radical copolymerization of methyl methacrylate(MMA) with N-phenylmaleimide(NPMI) and styrene(St) in the presence of montmorillonite(MMT) using 2,2′-azobis(2-methyl-propionamidine) dihydrochloride(AIBA) as initiator was investigated by soap-free emulsion copolymerization. The decomposition rate of AIBA , copolymerization rate ,and the molecular weight of the resultant copolymer are all greatly increased with increasing the amount of the montmorillonite. The copolymerization rate is proportional to the initiator concentration to the power of 1.4. The apparent activation energy of the overall copolymerization was measured to be 124.8 kJ/mol. The molecular weight of the resultant copolymer decreases with increasing the concentration of AIBA and copolymerization temperature.

关 键 词：动力学 甲基丙烯酸甲酯 纳米复合材料 共聚合反应 无皂乳液 

分 类 号：TQ316.334[化学工程—高聚物工业]