アニオン重合の基礎から最近の進歩3 : リビングアニオン重合によるエラストマーの分子設計 Fundamental Studies and Recent Advances in Anionic Polymerization 3 : Molecular Design of Elastomers by Means of Living Anionic Polymerization

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著者

    • 杉山 賢次 SUGIYAMA Kenji
    • 東京工業大学大学院理工学研究科有機・高分子物質専攻 Polymeric and Organic Materials Department, Graduate School of Science and Engineering, Tokyo Institute of Technology
    • 平尾 明 HIRAO Akira
    • 東京工業大学大学院理工学研究科有機・高分子物質専攻 Polymeric and Organic Materials Department, Graduate School of Science and Engineering, Tokyo Institute of Technology

抄録

This paper will review various molecular designs and syntheses of synthetic elastomers by means of living anionic polymerization of 1, 3-diene monomers such as 1, 3-butadiene and isoprene. By appropriately choosing polymerization variables such as initiator, solvent, temperature, concentration, and additive, a wide variety of poly(1, 3-butadiene)s and poly(isoprene)s with precisely controlled chain-lengths as well as desired microstructures have been available. Furthermore, random copolymers of styrene-1, 3-butadiene rubber (SBR) and styrene-1, 3-butadiene-isoprene rubber (SBIR) and ABA triblock copolymers of polystyrene-<i>block</i>-poly-1, 3-butadiene-<i>block</i>-polystyrene (SBS) and polystyrene-<i>block</i>-polyisoprene-<i>block</i>-polystyrene (SIS) have been industrially produced at the present time. The latter block copolymers are well known as thermoplastic elastomers where each segments are phase-separated and self-organized at molecular level and the polystyrene segments self-organized work as physically cross-linked points. Well-defined chain-end-functionalized poly-1, 3-butadiene and polyisoprene with hydroxyl groups at both chain-ends (one hydroxyl group per each chain-end) are synthesized by living anionic polymerization and used as model network elastomers. It has been found that the introduction of polar functional groups such as amino and hydroxyl groups into synthetic elastomers can affect significantly on their physical properties. We have recently established a novel methodology based on living anionic polymerization using specially designed 1, 1-diphenylethylene derivatives, by which multi-functionalization is possible at polymer chain-ends and/or in-chains. We have also demonstrated several possibilities of new synthetic elastomers such as chain-end-multi-functionalized poly-1, 3-dienes, regular and asymmetric star-branched polymers comprised of poly-1, 3-diene segments, and star-branched block copolymers of styrene and 1, 3-diene monomer, all of which can be synthesized by the above-mentioned methodology.

収録刊行物

  • 日本ゴム協會誌  

    日本ゴム協會誌 80(2), 59-65, 2007-02-15 

    THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN

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各種コード

  • NII論文ID(NAID)
    10018291399
  • NII書誌ID(NCID)
    AN00189720
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    0029022X
  • NDL 記事登録ID
    8687106
  • NDL 雑誌分類
    ZP17(科学技術--化学・化学工業--高分子化学・高分子化学工業--ゴム・プラスチックス)
  • NDL 請求記号
    Z17-125
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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