N—对位取代苯基马来酰亚胺系列单体的均聚合研究

以乙醇为溶剂，系统地研究了引发剂浓度、单体浓度、聚合时间对N－对位聚代苯基马来酰亚胺均聚活性的影响。讨论了单体结构与聚合性的关系，得到N－对位取代苯基马亚酰亚胺均聚时聚合活性按苯环上取代基的排列顺序为：－C＞－OCH3＞－CH3＞－H。用AIBN作光引发剂，在外光的照射下，初步确定N－对位取代苯基马亚酰胺可以进行光引发聚合。通过GPS分析，得到N－苯基马来酰胺均聚物相对分子质量达到2400。通过热分析，证明N－苯基马亚酰亚胺聚合物、N－对甲苯马来酰亚胺聚合物都具有300℃以上的初始热分解温度。通过红外、核磁共振的联合测定，证明单体聚合时以打开双键的方式有效地进行聚合。

STUDY ON THE HOMOPOLYMERIZATION OF N-p-SUBSTITUTED PHERYL MALEIMIDES IN SOLUTION

Adoping alcohol as solvent,the effects of monomer concentration,initiator concentration and reaction time on the four N-p-substituted phenyl maleimides homopolymerization were systematically studied.The four N-p-substituted phenyl maleimides also could homopolymerize by AIBN initiated under ultra-violet light.The GPC analysis testified that the relation molecular mass of N-phenyl maleimide homopolymer was over 2400.The test of heat capacity illustrated that the initial descomposition temperature of N-phenyl maleimide homopolymer and N-p-methylphenyl maleimide homopolymer were both up to 300℃.The results of infra-red and nuclear magnetic resonant analysis explained that the four N-p-substituted phenyl maleimides split double bond to form long chain while homopolying.