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Creation of multi-functionalized monodomain liquid crystalline elastomers by incorporating dynamic covalent bonded cross-links

Research Project

Project/Area Number 17K17708
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Polymer/Textile materials
Polymer chemistry
Research InstitutionNagoya Institute of Technology

Principal Investigator

Hayashi Mikihiro  名古屋工業大学, 工学(系)研究科(研究院), 助教 (70792654)

Research Collaborator Yano Ryoto  
Tokita Masatoshi  
Takasu Akinori  
Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords結合交換型動的共有結合 / 液晶エラストマー / vitrimer / ポリエステル / 再成型 / 再加工 / 表面傷の修復 / 自己接着 / 結合交換型動的共有結合架橋 / 再利用 / 結合交換型動的架橋 / 応力緩和 / 成型加工 / 熱可逆伸縮 / 動的共有結合 / 再成形性 / 熱可逆伸縮性
Outline of Final Research Achievements

Elastomers possess 3D networks composed of covalently cross-linked molten polymers. Liquid crystalline elastomers are prepared by utilizing liquid crystalline polymers as the network components. These are expected for the application of actuators and artificial muscles owing to the spontaneous stretchability induced by the variation of mesogen orientation depending on the external stimuli, such as heat and light. In this research, we established the method to incorporate “bond-exchangeable cross-links” into the polymeric networks, which led to the creation of noble soft materials with unique functions, such as re-processability and recyclability.

Academic Significance and Societal Importance of the Research Achievements

共有結合架橋の不可逆な性質から、一度架橋反応を施した材料(例えば輪ゴム)の再成型・再利用は不可能である。本研究課題では、熱を加えるだけで架橋結合の交換が連続的に起こる「結合交換型動的共有結合性架橋」を施した新規高分子ソフトマテリアルを開発した。結合交換が活性化する温度以上では、再成型・再利用・傷の修復などユニークな機能を示した。これらの機能から、本材料コンセプトは環境に配慮したエコ・マテリアルの創製に有用であり、且つ資源やエネルギーの乏しい極限環境(宇宙や深海)での活躍も期待できる。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (16 results)

All 2019 2018 2017 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (11 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results) Book (1 results) Remarks (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Synthesis of amorphous low Tg polyesters with multiple COOH side groups and their utilization for elastomeric vitrimers based on post-polymerization cross-linking2019

    • Author(s)
      Mikihiro Hayashi, Ryoto Yano, Akinori Takasu
    • Journal Title

      Polymer chemistry

      Volume: 10 Issue: 16 Pages: 2047-2056

    • DOI

      10.1039/c9py00293f

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 種々の架橋様式を駆使した機能性ソフトマテリアルの設計2018

    • Author(s)
      林 幹大
    • Organizer
      第67回高分子学会年次大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 多点フリー OH基を含む線状ポリエステルの分子間エステル交換反応を介したゲル化機構の調査2018

    • Author(s)
      矢野稜人,林幹大, 高須昭則
    • Organizer
      第67回高分子学会年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Re-ordering for disordered structure of an amorphous - b - main-chain liquid crystal - b - amorphous copolymer into ordered lamellar structure by adding homo liquid crystalline chains2018

    • Author(s)
      Mikihiro Hayashi, Junpei Kuribayashi, Masatoshi Tokita
    • Organizer
      256th ACS National Meeting & Exposition
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] エステル交換型動的架橋を組み込んだポリエステルソフトフィルムの調製と物性評価2018

    • Author(s)
      矢野稜人,林幹大,高須昭則
    • Organizer
      第67回高分子討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 非晶-液晶-非晶トリブロック共重合体/液晶ホモポリマーブレンドが形成する高秩序ラメラ構造2018

    • Author(s)
      林幹大,戸木田雅利
    • Organizer
      第67回高分子討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 結合交換型動的共有結合架橋を施したソフトポリエステルフィルムの調製とその緩和特性2018

    • Author(s)
      林幹大,矢野 稜人,高須 昭則
    • Organizer
      第66回レオロジー討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Physical Property Investigation of Polyester Soft Films Containing Trans-esterification Type Dynamic Cross-links2018

    • Author(s)
      Ryoto Yano, Mikihiro Hayashi, Akinori Takasu
    • Organizer
      IPC2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Adhesive-free adhesion of cross-linked soft polyester films by utilizing bond-exchangeable dynamic cross-links2018

    • Author(s)
      Mikihiro Hayashi, Ryoto Yano, Akinori Takasu
    • Organizer
      IPC2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Preparation of Re-processable Main-chain Liquid Crystalline Elastomers Utilizing Dynamic Covalent Bonded Cross-links2017

    • Author(s)
      Mikihiro Hayashi, Masatoshi Tokita
    • Organizer
      International Union of Materials Research Societies(IUMRS-ICAM) 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 結合交換型動的架橋により調製される 主鎖型液晶エラストマーの架橋密度と力学物性の相関2017

    • Author(s)
      林 幹大、高須昭則、戸木田雅利
    • Organizer
      第66回高分子学会討論会
    • Related Report
      2017 Research-status Report
  • [Presentation] 結合交換型動的架橋により調製される 主鎖型液晶エラストマーの力学特性2017

    • Author(s)
      林 幹大、高須昭則、戸木田雅利
    • Organizer
      第65回レオロジー討論会
    • Related Report
      2017 Research-status Report
  • [Book] コンバーテック 2019年3月号2019

    • Author(s)
      林幹大
    • Total Pages
      4
    • Publisher
      (株)加工技術研究会
    • Related Report
      2018 Annual Research Report
  • [Remarks] 研究室webサイト

    • URL

      http://takasu-lab.web.nitech.ac.jp/

    • Related Report
      2018 Annual Research Report
  • [Remarks] 林幹大 研究者サイト

    • URL

      http://researcher.nitech.ac.jp/html/100000627_ja.html?l=ja&k=%E6%9E%97%E5%B9%B9%E5%A4%A7&o=title&p=1

    • Related Report
      2018 Annual Research Report
  • [Patent(Industrial Property Rights)] 自己接着性、再成型性、傷修復性を示すソフトな架橋ポリエステル樹脂・ フィルム及びその製造方法2019

    • Inventor(s)
      林幹大、矢野稜人、高須昭則
    • Industrial Property Rights Holder
      林幹大、矢野稜人、高須昭則
    • Industrial Property Rights Type
      特許
    • Filing Date
      2019
    • Related Report
      2018 Annual Research Report

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Published: 2017-04-28   Modified: 2020-03-30  

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