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Synthesis of high-performance rubber via stereoblock polymerization

Research Project

Project/Area Number 18K14276
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 35010:Polymer chemistry-related
Research InstitutionHiroshima University

Principal Investigator

Tanaka Ryo  広島大学, 先進理工系科学研究科(工), 助教 (60640795)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsステレオブロック重合 / ポリ共役ジエン / 星型ポリマー / 架橋ポリマー / 星型ポリイソプレン / 架橋ポリイソプレン / 配位重合 / ネオジム錯体 / 末端官能基化 / 希土類触媒 / ボロヒドリド錯体 / 高分子合成 / 精密重合 / ゴム材料 / ステレオブロックポリマー
Outline of Final Research Achievements

The precise control of stereospecificity in conjugated diene polymerizations are directly related to the thermal or mechanical properties of the polymer.
In this project, based on our previous results about the synthesis of stereoblock polydienes using neodymium borohydride catalysts, we performed several investigations revealing the structure-polymerization behavior relationships on the conjugated diene polymerization. As a result, we achieved more precise synthesis of cis-1,4/trans-1,4 stereoblock polyisoprene and polybutadiene. Moreover, we found several functionalized monomers which are applicable to the stereoblock polymerization, and achieved the synthesis of end-functionalized and random copolymer.

Academic Significance and Societal Importance of the Research Achievements

循環型社会の実現が求められている中で、ゴム材料のリサイクルは重要な技術の一つである。本研究では、ステレオブロック重合法の開拓によって、trans-1,4ポリブタジエン連鎖のような結晶性の物理的架橋点や、ボロン酸のような可逆的に形成可能な共有結合性の架橋点を共役ジエン重合体に導入することができた。今回導入に成功した新たな構造は、いずれも可逆的に生成可能な架橋点となり得る構造であり、リサイクル性の高い高機能ゴム材料を開発するうえで有意義である。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (12 results)

All 2020 2019 2018

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Precise control of coordination polymerization via the modification of methylaluminoxane (MAO)2020

    • Author(s)
      Ryo Tanaka
    • Journal Title

      Polymer Journal

      Volume: - Issue: 7 Pages: 661-670

    • DOI

      10.1038/s41428-020-0325-x

    • NAID

      40022335646

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Crystal structure of di-μ-trihydro(pentafluorophenyl)borato-tetrakis(tetrahydrofuran)disodium2020

    • Author(s)
      Ryo Tanaka, Takeshi Shiono
    • Journal Title

      Acta Cryst.

      Volume: E76 Issue: 2 Pages: 145-147

    • DOI

      10.1107/s2056989019017201

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of Ancillary Ligands as a Part of Counteranion in Neodymium-Catalyzed Isoprene Polymerization2020

    • Author(s)
      Ryo Tanaka, Yuushou Nakayama, Takeshi Shiono
    • Journal Title

      Organometallics

      Volume: - Issue: 10 Pages: 1855-1860

    • DOI

      10.1021/acs.organomet.0c00112

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Stereospecific polymerization of conjugated dienes using neodymium alkylborohydride complexes2019

    • Author(s)
      Ryo Tanaka, Yuto Shinto, Ryusei Matsuzaki, Yuushou Nakayama, Takeshi Shiono
    • Journal Title

      Dalton Trans.

      Volume: 印刷中 Issue: 21 Pages: 7267-7273

    • DOI

      10.1039/c8dt04220a

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Cis-1,4 Specific Polymerization of 1,3-butadiene using PNP-pincer Ligated Iron(II) Complexes2019

    • Author(s)
      Ryo Tanaka, Kenshi Ikeda, Yuushou Nakayama, Takeshi Shiono
    • Journal Title

      Chem. Lett.

      Volume: 印刷中 Issue: 6 Pages: 525-528

    • DOI

      10.1246/cl.190115

    • NAID

      130007659773

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] ジアミノナフタレン保護ボロン酸含有コモノマーを用いた官能基化ポリイソプレンの合成2020

    • Author(s)
      桑原 唯菜, 田中 亮, 中山 祐正, 塩野 毅
    • Organizer
      2020年度日本化学会中国四国支部大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 塩素架橋ネオジムボロヒドリド錯体を用いた共役ジエンの重合における対アニオンの効果2020

    • Author(s)
      田中 亮, 中山 祐正, 塩野 毅
    • Organizer
      日本化学会第100春季年会
    • Related Report
      2019 Research-status Report
  • [Presentation] ハロゲン架橋シングルサイトネオジム触媒を用いた共役ジエンの重合2019

    • Author(s)
      田中 亮, 中山 祐正, 塩野 毅
    • Organizer
      第68回高分子討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] 13族元素化合物を用いた配位重合の精密制御2019

    • Author(s)
      田中 亮
    • Organizer
      第34回中国四国地区高分子若手研究会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Chemistry of Methylaluminoxane - Efficient preparation method and composition control2019

    • Author(s)
      Ryo Tanaka
    • Organizer
      The 8th Asian Polyolefin Workshop (APO2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Synthesis of Lanthanide(III) alkylborohydride complexes and their application to coordination polymerization catalyst2018

    • Author(s)
      Ryo Tanaka, Ryusei Matsuzaki, Yuto Shinto, Yuushou Nakayama, Takeshi Shiono
    • Organizer
      錯体化学会第68回討論会
    • Related Report
      2018 Research-status Report
  • [Presentation] ネオジム錯体触媒を用いたイソプレンと1-アルケンとの共重合2018

    • Author(s)
      田中 亮, 神藤 佑斗, 中山 祐正, 塩野 毅
    • Organizer
      第67回高分子討論会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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