THERMAL AND FLAMMABILITY BEHAVIOR OF COPOLYMERS OF N-(2,4,6-TRIBROMOPHENYL)MALEIMIDE WITH SOME ACRYLATES

The copolymers of N-(2,4,6-tribromophenyl)maleimide (TBPMI) with methy l acrylate, methyl methacrylate and acrylonitrile of different composi tion were prepared by free radical polymerization at low conversion. T heir thermal behaviour was established by TGA measurements in helium a tmosphere and flammability properties were determined by limiting oxyg en index method. The higher TBPMI content in the copolymer led to a hi gher thermal stability and lower flammability particularly when Sb2O3 was used as a synergist.