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Direct observation of polymer chain structures and dynamics inside bulk by atomic-resolution electron microscopy

Research Project

Project/Area Number 20K15330
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Miyata Tomohiro  東北大学, 多元物質科学研究所, 助教 (10838949)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords高分子 / 単一分子鎖 / 走査透過型電子顕微鏡 / 原子分解能観察 / 立体配置 / 立体配座 / 吸着構造 / 高分子鎖 / STEM / TEM
Outline of Research at the Start

高分子は容器から航空機まで幅広く利用される基盤材料であるが、高精度な材料設計を実現するために必要な材料内部の高分子鎖の構造やダイナミクスについては、高分子鎖のコントラストが微弱で観察が困難なために未だ明らかにされていない。そこで本研究では、高分子鎖を重元素原子で修飾し、重元素原子を原子分解能かつ高コントラストで観察できる電子顕微鏡手法を用いることで、高分子材料中における高分子鎖一本を可視化する手法の開発を目的とした。さらに本手法を発展させ、ガラス転移温度近傍における高分子鎖の動的挙動を原子・分子レベルの直接観察により明らかにする。

Outline of Final Research Achievements

We have developed a technique for directly observing the heavy atoms in polymer chains with atomic-resolution electron microscopy to reveal the structures and dynamic behaviors of single polymer chains at the atomic level. By combining the observed images with molecular mechanics simulations and a machine learning technique, we speculated the atomic-scale 3D structures of single polymer chains. The deformation behaviors of polymer chains were also observed. Furthermore, the morphology of individual polymer chains adsorbed on inorganic nanoparticles inside a polymer film was clarified by direct observation.

Academic Significance and Societal Importance of the Research Achievements

これまで直接観察による解析が困難であった高分子鎖の一次構造(立体配置)および局所二次構造(立体配座)を直接観察に基づき推定する手法を構築した点や、高分子材料中の高分子鎖を直接観察する手法を確立した点に学術的意義がある。
また、高分子ナノコンポジットの材料特性に大きく関わる無機ナノ粒子への高分子鎖吸着構造を直接観察により明らかにしたことは、産業的に大きな意義がある。

Report

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

    (43 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (11 results) (of which Peer Reviewed: 10 results,  Open Access: 1 results) Presentation (31 results) (of which Int'l Joint Research: 12 results,  Invited: 2 results)

  • [Int'l Joint Research] NIST/The University of Maryland(米国)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Atomic-scale analysis on a rubber-brass adhesive interface using scanning transmission electron microscopy2023

    • Author(s)
      Miyata Tomohiro、Shimizu Katsunori、Sato Yohei K.、Jinnai Hiroshi
    • Journal Title

      Polymer

      Volume: 265 Pages: 125602-125602

    • DOI

      10.1016/j.polymer.2022.125602

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electron irradiation damage of amorphous epoxy resin at low electron doses2022

    • Author(s)
      Yoshida Kaname、Huang Hsin-Hui、Miyata Tomohiro、Sato Yohei K、Jinnai Hiroshi
    • Journal Title

      Microscopy

      Volume: published Issue: 4 Pages: 361-367

    • DOI

      10.1093/jmicro/dfac068

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dislocation-Induced Defect Formation in a Double-Gyroid Network2022

    • Author(s)
      Miyata Tomohiro、Wang Hsiao-Fang、Suenaga Takafumi、Watanabe Daisuke、Marubayashi Hironori、Jinnai Hiroshi
    • Journal Title

      Macromolecules

      Volume: 55 Issue: 18 Pages: 8143-8149

    • DOI

      10.1021/acs.macromol.2c01298

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Morphologies of polymer chains adsorbed on inorganic nanoparticles in a polymer composite as revealed by atomic-resolution electron microscopy2022

    • Author(s)
      Miyata Tomohiro、Kawagoe Yoshiaki、Okabe Tomonaga、Jinnai Hiroshi
    • Journal Title

      Polymer Journal

      Volume: 54 Issue: 11 Pages: 1297-1306

    • DOI

      10.1038/s41428-022-00690-4

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Compositional Analysis on Epoxy-resin/inorganic Interfaces using Scanning Transmission Electron Microcopy2022

    • Author(s)
      Miyata Tomohiro、Sato Yohei、Yoshida Kaname、Huang Hsin-Hui、Mizoguchi Teruyasu、Hagita Katsumi、Mizukami Masashi、Jinnai Hiroshi
    • Journal Title

      Microscopy and Microanalysis

      Volume: 28 Issue: S1 Pages: 2522-2524

    • DOI

      10.1017/s1431927622009643

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nanoscale Stress Distribution in Silica-Nanoparticle-Filled Rubber as Observed by Transmission Electron Microscopy: Implications for Tire Application2021

    • Author(s)
      Tomohiro Miyata, Tomohiko Nagao, Daisuke Watanabe, Akemi Kumagai, Keizo Akutagawa, Hiroshi Morita, and Hiroshi Jinnai
    • Journal Title

      ACS Applied Nano Materials

      Volume: 4 Issue: 5 Pages: 4452-4461

    • DOI

      10.1021/acsanm.1c00009

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nano-diffraction Imaging of Polymer Crystals2021

    • Author(s)
      Shusuke Kanomi,Hironori Marubayashi,Tomohiro Miyata,Kenji Tsuda,Hiroshi Jinnai
    • Journal Title

      Macromolecules

      Volume: 54 Issue: 13 Pages: 6028-6037

    • DOI

      10.1021/acs.macromol.1c00683

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Crack propagation behaviors in a nanoparticle‐filled rubber studied by in situ tensile electron microscopy2021

    • Author(s)
      Daisuke Watanabe, Tomohiro Miyata, Tomohiko Nagao, Akemi Kumagai, Hiroshi Jinnai
    • Journal Title

      Journal of Polymer Science

      Volume: 60 Issue: 7 Pages: 1277-1284

    • DOI

      10.1002/pol.20210269

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Atomic-scale Observation of Polymer-chain Conformations Using Scanning Transmission Electron Microscopy2020

    • Author(s)
      Miyata Tomohiro、Goseki Raita、Ishizone Takashi、Jinnai Hiroshi
    • Journal Title

      Microscopy and Microanalysis

      Volume: 26 Issue: S2 Pages: 3016-3017

    • DOI

      10.1017/s1431927620023545

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] 黄銅接着界面における破壊機構観察のための電子顕微鏡技術2020

    • Author(s)
      清水克典、宮田智衆、陣内浩司
    • Journal Title

      日本接着学会誌

      Volume: 56 Pages: 34-40

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] イオン液体中の微細構造解析2020

    • Author(s)
      宮田智衆、上杉文彦
    • Journal Title

      Nanotech Japan Bulletin

      Volume: 13 Pages: 1-8

    • Related Report
      2020 Research-status Report
  • [Presentation] Compositional Changes at Epoxy-resin/inorganic Interfaces Revealed by 1-nm Resolution Electron Spectroscopy2022

    • Author(s)
      Tomohiro Miyata, Yohei Sato, Kaname Yoshida, Hsin-Hui Huang, Teruyasu Mizoguchi, Katsumi Hagita, Masashi Mizukami, Hiroshi Jinnai
    • Organizer
      2022 MRS Fall Meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Compositional Analysis on Epoxy-resin/inorganic Interfaces using Scanning Transmission Electron Microcopy2022

    • Author(s)
      Tomohiro Miyata, Yohei Sato, Kaname Yoshida, Hsin-Hui Huang, Teruyasu Mizoguchi, Katsumi Hagita, Masashi Mizukami, Hiroshi Jinnai
    • Organizer
      Microscopy and microanalysis 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Structural analysis of an adhesive interface between rubber and brass using high-resolution transmission electron microscopy2021

    • Author(s)
      Tomohiro Miyata,Katsunori Shimizu,Yohei Sato,Kaname Yoshida,Hiroshi Jinnai
    • Organizer
      The 2021 International Chemical Congress of Pacific Basin Societies
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Visualization of polymer-chain conformation using atomic-resolution electron microscopy2021

    • Author(s)
      T. Miyata,R. Goseki,T. Ishizone,H. Jinnai
    • Organizer
      The 2021 International Chemical Congress of Pacific Basin Societies
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] The 2021 International Chemical Congress of Pacific Basin Societies (Pacifichem 2021)2021

    • Author(s)
      Shusuke Kanomi,Hironori Marubayashi,Tomohiro Miyata,Hiroshi Jinnai
    • Organizer
      The 2021 International Chemical Congress of Pacific Basin Societies
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Deformation mechanisms of a rubber composite containing silica nanoparticle studied by transmission electron microscopy2021

    • Author(s)
      Daisuke Watanabe,Tomohiko Nagao,Tomohiro Miyata,Wang Hsiao-Fang,Hironori Marubayashi,Hiroshi Jinnai
    • Organizer
      The 2021 International Chemical Congress of Pacific Basin Societies
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Nanoscale molecular vibration spectroscopy of polymers2021

    • Author(s)
      Ryosuke Senga,Kazu Suenaga,Hsiao-Fang Wang,Tomohiro Miyata,Hiroshi Jinnai
    • Organizer
      The Material Research Meeting 2023
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Multi-scale MD Simulations of Extremely Slow Cooperative Diffusion of Epoxy Resin Molecules at Naturally Oxidized Si Substrates2021

    • Author(s)
      Katsumi Hagita,Tomohiro Miyata,Yohei Sato,Hiroshi Jinnai
    • Organizer
      The Material Research Meeting 2023
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Atomic-scale analysis on polymer-chain structures using scanning transmission electron microscopy2021

    • Author(s)
      T. Miyata,R. Goseki,T. Ishizone,H. Jinnai
    • Organizer
      Microscopy Conference 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 電子顕微鏡を用いた高分子鎖の原子レベル立体構造解析2021

    • Author(s)
      宮田智衆,後関頼太,石曽根隆,陣内浩司
    • Organizer
      第70回高分子学会年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 位相差透過型電子顕微鏡法を用いた高分子材料の高コントラスト観察2021

    • Author(s)
      宮田智衆,王孝方,陣内浩司
    • Organizer
      第70回高分子討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] 電子顕微鏡観察に基づく高分子鎖の原子レベル立体構造解析2021

    • Author(s)
      宮田智衆,後関頼太,石曽根隆,陣内浩司
    • Organizer
      日本顕微鏡学会第77回学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Atomic-scale observation of polymer-chain conformations using scanning transmission electron microscopy2020

    • Author(s)
      Tomohiro Miyata, Raita Goseki, Takashi Ishizone, Hiroshi Jinnai
    • Organizer
      Microscopy & Microanalysis 2020 Meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Atomic-resolution analysis of rubber/brass adhesive interfaces using transmission electron microscopy2020

    • Author(s)
      Katsunori Shimizu, Tomohiro Miyata, Hiroshi Jinnai
    • Organizer
      International elastomer conference(American chemical society rubber divission)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Atomic-resolution analysis of rubber/brass adhesive interfaces using transmission electron microscopy2020

    • Author(s)
      Tomohiro Miyata, Raita Goseki, Takashi Ishizone, Hiroshi Jinnai
    • Organizer
      3rd G'L'owing Polymer Symposium in KANTO
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 液体・高分子の原子分解能観察2020

    • Author(s)
      宮田智衆
    • Organizer
      日本顕微鏡学会第45回関東支部講演会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 原子分解能電子顕微鏡による高分子鎖の形態および固体表面接着状態の直接観察2020

    • Author(s)
      宮田智衆
    • Organizer
      第3回Nanotech CUPAL若手研究員との交流会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 原子分解能電子顕微鏡による高分子鎖局所形態の解析2020

    • Author(s)
      宮田智衆、後関頼太、石曽根隆、陣内浩司
    • Organizer
      第69回高分子討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] 透過型電子顕微鏡を用いたゴム/黄銅接着界面の破壊面の特定2020

    • Author(s)
      清水克典,宮田智衆,陣内浩司
    • Organizer
      日本ゴム協会 2020年年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] ゴム/黄銅接着界面の引張破壊挙動観察2020

    • Author(s)
      清水克典,宮田智衆,陣内浩司
    • Organizer
      顕微鏡学会第76回学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 透過型電子顕微鏡を用いたゴム/黄銅接着界面の引張破壊挙動の可視化2020

    • Author(s)
      清水克典,宮田智衆,陣内浩司
    • Organizer
      第69回高分子学会年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 電子顕微鏡技術を用いたゴム/黄銅接着界面の破壊機構観察2020

    • Author(s)
      清水克典,宮田智衆,陣内浩司
    • Organizer
      第58回日本接着学会年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 走査透過型電子顕微鏡法を用いた高分子鎖立体構造の原子レベル解析2020

    • Author(s)
      宮田智衆、後関頼太、石曽根隆、陣内浩司
    • Organizer
      MRM Forum 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] 透過型電子顕微鏡を用いたシリカナノ粒子分散ゴム延伸過程の解析2020

    • Author(s)
      渡邉大介、長尾知彦、宮田智衆、王孝方、丸林弘典、陣内浩司
    • Organizer
      第69回高分子学会年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 透過型電子顕微鏡を用いたシリカナノ粒子分散架橋ゴムにおける亀裂進展過程の解析2020

    • Author(s)
      渡邉大介、長尾知彦、宮田智衆、王孝方、丸林弘典、陣内浩司
    • Organizer
      第69回高分子討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] 透過型電子顕微鏡を用いたシリカナノ粒子分散ゴム変形過程の観察2020

    • Author(s)
      渡邉大介、長尾知彦、宮田智衆、王孝方、丸林弘典、陣内浩司
    • Organizer
      顕微鏡学会第76回学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] ナノ回折イメージングに向けた結晶性高分子の電子線ダメージの評価2020

    • Author(s)
      狩野見秀輔、丸林弘典、宮田智衆、陣内浩司
    • Organizer
      顕微鏡学会第76回学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 電子顕微鏡を用いた結晶性高分子のナノ回折イメージング2020

    • Author(s)
      狩野見秀輔、丸林弘典、宮田智衆、陣内浩司
    • Organizer
      第69回高分子討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] ブロック共重合体試料の分子量・組成分布がダブルジャイロイド構造の形態に与える影響2020

    • Author(s)
      末永崇文、渡邉大介、宮田智衆、丸林弘典、陣内浩司
    • Organizer
      顕微鏡学会第76回学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] ブロック共重合体の分子量・組成分布が ダブルジャイロイド構造の欠陥に及ぼす影響2020

    • Author(s)
      末永崇文、渡邉大介、宮田智衆、丸林弘典、陣内浩司
    • Organizer
      第69回高分子討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] ナノ回折イメージングによる高分子の結晶高次構造のナノマッピング2020

    • Author(s)
      丸林弘典, 狩野見秀輔, 宮田智衆, 陣内浩司
    • Organizer
      MRM Forum 2020
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-03-27  

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