Synthesis and Characterization of Polystyrene-b-Poly（Glycidyl Methacrylate） Copolymer

The living poly(styryl)lithium was synthesized by anionic polymerization under argon atmosphere. Polystyrene-b-poly(glycidyl methacrylate) copolymers were prepared by the copolymerization reaction of poly(styryl)lithium with glycidyl methacrylate (GMA),which were characterized with GPC, FT-IR, 1H-NMR and hydrochloric aciddioxane argentimetric method. Effects of GMA dosage, copolymerization duration and temperature on the number of side epoxy group were also studied. Results show that poly(styryl)lithium endcapped with 1,1-diphenylethylene (DPE) can initiate GMA in toluene in the presence of LiCl and a small amount of THF, and the number of side epoxy group can be adjusted. The optimal reaction temperature is -65 ℃ and the best termination time is 0.5 min.