THERMAL-ANALYSIS AND CHARACTERIZATION OF 2-ALLYLPHENOXYORGANOCYCLOTRIPHOSPHAZENE COPOLYMERS

The radical copolymerizations of I (2-allylphenoxyorganocyclotriphosph azene) with chloride, phenoxy, 2,2,2-trifluoroethoxy side group reacti ng with II (styrene, methyl methacrylate and vinylbenzyl chloride) usi ng AIBN, n-BuLi and ultraviolet as initiator were investigated. The ty pe of the copolymerization, reaction time, temperature were evaluated to obtain the optimum reaction condition. The incorporation of organop hosphazene units into an organic polymer backbone decreased the glass transition temperature and increased the thermal stability of the copo lymers. The weight conversion and the molecular weight had a maximum v alue at reaction temperature of around 70 degrees C. The order for bot h weight conversion of the copolymerization and the thermal stability of phosphazene polymer with the co-monomer was VBC > STY > MMA, and wi th the side group Cl- > C6H5O- > CF3CH2O-. The phosphazene copolymer i s of conductivity and crystallization.