Citation: Shou Jun XU, Kun Yuan QIU. SYNTHESIS　OF　BLOCK　COPOLYMERS　OF　STYRENE　AND　N-(p-SUBSTITUTED　PHENYL)　MALEIMIDES　BY　ANIONIC　POLYMERIZATION[J]. Chinese Chemical Letters, ;1996, 7(4): 367-370. shu

SYNTHESIS　OF　BLOCK　COPOLYMERS　OF　STYRENE　AND　N-(p-SUBSTITUTED　PHENYL)　MALEIMIDES　BY　ANIONIC　POLYMERIZATION

College of Chemistry and Molecular Engineering, Peking University, Beijing 100871

Received Date: 14 August 1995

Fund Project: This work was supported by National Natural Science Foundation of China and China Petrochemical Cooperation.

The block copolymers were synthesized by anionic polymerization via two steps reaction.First,styrene was initiated by n-butyl lithium,then maleimides were added into the living styrene system to obtain block copolymers.¹H-NMR and FT-IR measurements indicated that block copolymers had been formed.From the results of thermogravimetric analysis,it could be concluded that the block copolymer had a much better thermal stability than random copolymers prepared by radical polymerization.Also the surface hydrophilicities of the two kinds of copolymers were compared.
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