Synthesis and thermoanalysis of suspension copolymer of N-cyclohexylmaleimide and methyl methacrylate

Copolymers of N-cyclohexylmaleimide (CHMI) and Methyl Methacrylate (MMA), in which CHMI content ranged from 5-80% (in Wt.), were synthesized by suspension polymerization. The thermal properties of copolymer at different CHMI feed content were investigated by TBA and TGA. The results show that the glass transition temperature (T g ) and the decomposition temperature of copolymers increased with increasing CHMI feed content. M ¥ n and M ¥ w of copolymers were determined by GPC. The resultS show that there exists a maximum value when the CHMI feed content lay between 50 and 60%. The mechanical properties (tensile strength and impact strength) of the copolymers decreased with increasing CHMI content. The rheological behavior of copolymers in the melt was that of pseudoplastic liquid, and the flow index n increased with increasing CHMI feed content from 5 to 30%.