By ring opening polymerization of ɛ- caprolacyone modified polystyrene with two arms graft copolymers of synthesis and characterization

In this study, 4-chloromethyl styrene was performed before the modification with diethanolamine. A series of copolymers was prepared by free-radical method styrene monomer and styrene. Free radical copolymerization was performed in presence of 1,4-dioxane with AIBN initiator at 60°C. The graft copolymer of ɛ-caprolacton and styrene with dihydroxyl side group was synthesized by ring opening polymerization in presence of Sn(Oc)2. The copolymer conposition was determined by 1H-NMR. The molecular weight and molecular weight distribution were measured by GPC. The thermal behavior of all copolymer and graft copolymer were measured by 1H–NMR technique. The results were compared with each other and submitted as tablo. The dielectric constant and dielectric loss factor bearing polar groups was investigated by impedance analyzer. The measurements were investigated as a function of temperature at constant frequence. Key Words: Free Radical Polimerization, Thermal Properties, Dielectric Properties