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Design and development of silica-based self-healing materials

Research Project

Project/Area Number 20H02826
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
Research InstitutionWaseda University

Principal Investigator

Shimojima Atsushi  早稲田大学, 理工学術院, 教授 (90424803)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2021: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2020: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywords自己修復材料 / シロキサン / ナノ構造制御 / 自己修復 / 有機シロキサン / ブロックコポリマー / シリカ / ナノ構造 / 自己組織化 / ポリシロキサン / エラストマー
Outline of Research at the Start

本研究では、シロキサン(Si-O-Si)結合の可逆性に着目し、分子スケールからメソスケールの精密な構造制御によって、損傷(クラック等)の高い修復能力と、高い熱的・化学的安定性、優れた機械的特性を兼ねそろえたシリカ系自己修復機能材料を創出すること目的とする。これは、分子設計の容易な有機材料を中心に発展してきた自己修復材料の合成化学を無機材料に拡張する新規かつ独創的な取り組みである。シリカ系材料は窓材、封止材、コーティング等として幅広い分野で利用されているが、微細なクラック形成に由来する特性低下が問題となっている。そのため本研究は学術面のみならず、実用面でも重要である。

Outline of Final Research Achievements

Siloxane (Si-O-Si) based materials are widely used in various fields due to their characteristics such as high thermal and chemical stability. Imparting self-healing functionality to siloxane-based materials is an important issue for increasing their lifetime and reliability. In this study, we designed lamellar organosiloxane films with a crack-healing ability and with improved hardness, adhesion to the substrate, and solvent resistance. Furthermore, we successfully created silicone elastomers based on new self-healing mechanisms by using cage-type siloxane/germoxane compounds as crosslinkers and healing agents.

Academic Significance and Societal Importance of the Research Achievements

本研究では、有機シロキサン材料の分子レベルからナノレベルでの精密構造制御により、従来のシロキサン系自己修復材料の課題を克服し、クラック等の損傷の高い修復能力と、高い熱的・化学的安定性、優れた機械的特性を兼ねそろえたシロキサン系自己修復機能材料を創出した。クラックの自己修復能を有するラメラ構造の有機シロキサンに関する成果は、保護コーティングなどとしての実用化に向けて重要な知見を与えるものである。また、カゴ型シロキサンやゲルモキサンを用いた修復機構は新規性が高く、今後の幅広い展開が期待できる。これらの研究成果は学術のみならず社会的にも大きな意義がある。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (18 results)

All 2022 2021 2020

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (13 results) (of which Int'l Joint Research: 4 results,  Invited: 7 results)

  • [Journal Article] Fluoride Ion-Encapsulated Germoxane Cages Modified with Organosiloxane Chains as Anionic Components of Ionic Liquids2022

    • Author(s)
      Taiki Hayashi, Nanako Murase, Naoto Sato, Koki Fujino, Natsuhiko Sugimura, Hiroaki Wada, Kazuyuki Kuroda, Atsushi Shimojima
    • Journal Title

      Organometallics

      Volume: 41 Issue: 11 Pages: 1454-1463

    • DOI

      10.1021/acs.organomet.2c00174

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Preparation of Colloidal Monodisperse Hollow Organosiloxane-Based Nanoparticles with a Double Mesoporous Shell2021

    • Author(s)
      Tenkai Watanabe, Eisuke Yamamoto, Hiroaki Wada, Atsushi Shimojima, Kazuyuki Kuroda
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 94 Issue: 5 Pages: 1602-1608

    • DOI

      10.1246/bcsj.20210022

    • NAID

      130008053923

    • ISSN
      0009-2673, 1348-0634
    • Year and Date
      2021-05-15
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Self-Healing Lamellar Silsesquioxane Thin Films2021

    • Author(s)
      Satoshi Kodama, Yoshiaki Miyamoto, Shun Itoh, Takashi Miyata, Hiroaki Wada, Kazuyuki Kuroda, Atsushi Shimojima
    • Journal Title

      ACS Appl. Polym. Mater.

      Volume: 3 Issue: 8 Pages: 4118-4126

    • DOI

      10.1021/acsapm.1c00592

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Variation of counter quaternary ammonium cations of anionic cage germanoxanes as building blocks of nanoporous materials2021

    • Author(s)
      Taiki Hayashi, Naoto Sato, Hiroaki Wada, Atsushi Shimojima, Kazuyuki Kuroda
    • Journal Title

      Dalton Trans.

      Volume: 50 Issue: 24 Pages: 8497-8505

    • DOI

      10.1039/d1dt01122g

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Preparation of periodic mesoporous organosilica with large mesopores using silica colloidal crystals as templates2020

    • Author(s)
      Naho Muramoto, Tomoaki Sugiyama, Takamichi Matsuno, Hiroaki Wad, Kazuyuki Kuroda, and Atsushi Shimojima
    • Journal Title

      Nanoscale

      Volume: 12 Issue: 41 Pages: 21155-21164

    • DOI

      10.1039/d0nr03837g

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 自己組織化を利用したシロキサン系自己修復材料の創製2022

    • Author(s)
      下嶋 敦
    • Organizer
      粉体粉末冶金協会2022年度春季大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Design of Self-healing Siloxane-based Nanomaterials2022

    • Author(s)
      Atsushi Shimojima
    • Organizer
      Solgel2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Design of Nanostructured Siloxane-based Materials with Self-healing Functions2022

    • Author(s)
      Atsushi Shimojima
    • Organizer
      Japan-US Workshop on Organic/Inorganic Hybrid Materials
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Design of Layered Organosiloxane Films with a Crack Healing Ability2022

    • Author(s)
      Atsushi Shimojima
    • Organizer
      The 5th International Conference on Nanospace Materials (ICNM2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ブロックコポリマーを用いた有機シロキサン系ナノ構造体薄膜の作製と自己修復特性2022

    • Author(s)
      宮本佳明, 下嶋 敦
    • Organizer
      日本セラミックス協会 第35回秋季シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Nanostructured Silica-based Materials with Self-healing Functions2022

    • Author(s)
      Atsushi Shimojima
    • Organizer
      International symposium on chemical design of functional coating and interface
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] ナノ構造制御に基づくシロキサン系自己修復材料の設計2021

    • Author(s)
      下嶋 敦
    • Organizer
      第40回無機高分子シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Design of Self-healing Siloxane-based Nanomaterials2021

    • Author(s)
      Atsushi Shimojima
    • Organizer
      International Workshop on Materials Science
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Nanostructured Organosiloxane Materials with Dynamic Functions2021

    • Author(s)
      Atsushi Shimojima
    • Organizer
      PacifiChem2021
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] フッ化物イオンを利用したシリコーン系自己修復材料の設計2021

    • Author(s)
      鈴木 舞, 岸 雅史, 和田 宏明, 黒田 一幸, 下嶋 敦
    • Organizer
      日本セラミックス協会 第34回秋季シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 有機架橋アルコキシシランを用いた自己修復性有機シロキサン薄膜の設計2020

    • Author(s)
      宮本佳明、池田垣沙弥、和田宏明、黒田一幸、下嶋 敦
    • Organizer
      日本セラミックス協会第33回秋季シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] シリカ系無機-有機ハイブリッドの構造制御に基づく機能性材料の創製2020

    • Author(s)
      下嶋 敦
    • Organizer
      日本化学会R&D懇話会211回
    • Related Report
      2020 Annual Research Report
  • [Presentation] Self-healing of Layered Organosiloxane Thin Films2020

    • Author(s)
      Atsushi Shimojima, Satoshi Kodama, Yoshiaki Miyamoto, Hiroaki Wada, Kazuyuki Kuroda
    • Organizer
      The 4th Asian Clay Conference (ACC-2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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