The known structure block copolymers could be obtained through anionic polymerization if the solvents and monomers were purified rigorously.This paper described the procedure about the synthesis of poly(butadiene)-block-poly (methyl methacrylate)copolymers.The polarity of solvents used for polymerization affects drastically the tacticity of polybutadiene.As the butadiene polymerized in THF instal of benzene
its Tg increases from -67℃ to -20℃.The results from the characterization of GPC
FTIR
NMR and DMA demonstrated taht the polymers obtained were block copolymers with contents more than 80% 1