Citation: Hai Feng LIU, Yang LI, Yu Rong WANG, Yan REN, Zhan Xia LU, Jin Bo ZHAO. Synthesis and Characterization of Star-branched Polyisobutylene by Combination of Anionic Polymerization and Cationic Polymerization[J]. Chinese Chemical Letters, ;2006, 17(8): 1117-1120. shu

Synthesis and Characterization of Star-branched Polyisobutylene by Combination of Anionic Polymerization and Cationic Polymerization

1.
Department of Polymer Science & Materials, Dalian University of Technology, Dalian 116012;
2.
Research Institute of Beijing Yanshan Petrochemical Co Ltd, Beijing 102500

Received Date: 23 January 2006

Fund Project: This work was sponsored by the China Petrochemical Corporation (No. 404038).

A star-shaped multifunctional styrene-isoprene copolymer was synthesized with n-BuLi as initiator, divinyl benzene as coupling agent, cyclohexane as solvent by living anionic polymerization.Using this polymer as grafting agent, a novel star-shaped branched polymer, containing several polyisobutylene, was prepared via cationic polymerization.The star PS-b-PI and star-branched polyisobutylene were characterized by GPC, ¹HNMR and FT-IR, and the effects of different adding order and the amount of grafting agent were investigated.
- Anionic polymerization,
- cationic polymerization,
- star-branched polymer,
- graft
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