Study on the activity of copolymerization of N-phenyl maleimides with styrene

The activity of copolymerization system of N-phenyl maleimide with styrene was systematically stud-ied. Ethanol as solvent, the optimum polymerization condition of initiator concentration, monomor concentra-tion, polymerization time, polymerization temperature and initiator type were obtained . By GPC and TGA analysis,the molecular weight and thermal stability of the copolymer were testified. The result of Infra-red and Nuclear Magnetic Resonant analysis illustrated that the double bond of N-phenyl maleimide was splitted when polymerizing with styrene,and the copolymerization was carried out in the way of alternation.