English Abstract |
Novel Thermoplastic Elastomers
and Block Copolymers by Living Cationic Polymerization Mitsuo Sawamoto Department of Polymer Chemistry,Graduate School of Engineering,Kyoto University Kyoto,Japan Masami Kamigaito Department of Applied Chemistry,Graduate,School of Engineering,Nagoya University Nagoya,Japan Tsuyoshi Ando Department of Polymer Chemistry,Graduate School of Engineering,Kyoto University Kyoto,Japan Nippon Gomu Kyokaishi,(2003),76(8), 285-288 General Review in Japanese. Abstract This article presents a concise account for the synthesis of block copolymers by living cationic polymerization that are potential thermoplastic elastomers.Typical examples include ABA-block polymers of isobutylene or vinyl ethers (as B) for soft/mid segments and styrene derivatives(as A)for hard/end segments.The synthetic methodologies include consecutive cationic polymerization with bifunctional initiators and combinations of living cationic and metal-catalyzed living radical polymerizations. Brief discussion is also given for their elastic and mechanical properties. Keywords: Living polymerization,Cationic polymerization,Radical polymerization, Isobutene,Vinyl Ether |
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