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Dynamics of polymer materials affected by adsorbed molecules from gas phase

Research Project

Project/Area Number 19H02768
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 35010:Polymer chemistry-related
Research InstitutionJapan Atomic Energy Agency

Principal Investigator

Aoki Hiroyuki  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 J-PARCセンター, 研究主幹 (90343235)

Co-Investigator(Kenkyū-buntansha) 宮崎 司  京都大学, 産官学連携本部, 特定教授 (70789940)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2019: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Keywords高分子薄膜 / 中性子反射率 / 分子運動性 / 超解像顕微鏡 / 分子運動 / 溶媒アニーリング / ダイナミクス
Outline of Research at the Start

高分子薄膜の処理には、昇温による熱アニーリングと溶媒蒸気に暴露する溶媒アニーリングが行われる。高分子薄膜の構造および物性を制御するためには、アニーリング処理中に生じる構造・分子運動の変化を分子レベルで理解することが必要である。熱による高分子鎖のダイナミクスはこれまでに様々な手法で研究が行われてきたものの、気相から取り込んだ溶媒分子による可塑化によって誘起される高分子の動的特性はこれまでにほとんど明らかになっていない。本研究では、溶媒アニーリング時における高分子鎖の振る舞いを中性子反射率法および顕微鏡による直接観察法によって明らかにすることを目指している。

Outline of Final Research Achievements

A novel method using neutron reflectometry has been developed to evaluate the effect of the absorption of gas molecules in an atmosphere on the physical properties of polymeric materials. By using deep learning, the statistical noise in the neutron reflectometry data were removed to achieve highly accurate analysis. This method has succeeded in improving the resolution of time-resolved measurements by more than one order of magnitude, which was previously several minutes or longer, and has made it possible to evaluate the dynamics on the order of seconds. By applying this method to the measurement of structural change of polymer film in solvent vapor, we succeeded to examine the processes of the absorption of solvent molecules into the polymer film and of structural change of the film in real time.

Academic Significance and Societal Importance of the Research Achievements

本研究ではディープラーニングを応用した新しい中性子反射率の解析技術を開発することで、高分子材料中への気体分子の吸収過程を直接評価することを可能にした。これにより、従来の手法では不可能であった速い構造変化を評価できるようになり、気相からの分子の吸収プロセスと、物性変化の基礎を明らかにすることができた。本研究によって得られた知見は、高湿度環境中に置かれた材料の特性変化や安定性を支配するメカニズムにも関与するものであり、材料開発における設計指針を与えるものである。

Report

(5 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (13 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Journal Article] Neutron Reflectometry Analysis of Condensed Water Layer Formation at a Solid Interface of Epoxy Resins Under High Humidity2023

    • Author(s)
      Liu Yuwei、Miyata Noboru、Miyazaki Tsukasa、Shundo Atsuomi、Kawaguchi Daisuke、Tanaka Keiji、Aoki Hiroyuki
    • Journal Title

      Langmuir

      Volume: 39 Issue: 29 Pages: 10154-10162

    • DOI

      10.1021/acs.langmuir.3c01091

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deep learning approach for an interface structure analysis with a large statistical noise in neutron reflectometry2021

    • Author(s)
      Aoki Hiroyuki、Liu Yuwei、Yamashita Takashi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 22711-22711

    • DOI

      10.1038/s41598-021-02085-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] In Situ Neutron Reflectometry Analysis of Interfacial Structure Formation between Phenolic Resin and Silica during Curing2021

    • Author(s)
      Izumi Atsushi、Shudo Yasuyuki、Shibayama Mitsuhiro、Miyata Noboru、Miyazaki Tsukasa、Aoki Hiroyuki
    • Journal Title

      Langmuir

      Volume: 37 Issue: 47 Pages: 13867-13872

    • DOI

      10.1021/acs.langmuir.1c02313

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Layered Structure in the Crystalline Adsorption Layer and the Leaching Process of Poly(vinyl alcohol) Revealed by Neutron Reflectivity2021

    • Author(s)
      Miyazaki Tsukasa、Miyata Noboru、Arima-Osonoi Hiroshi、Kira Hiroshi、Ohuchi Keiichi、Kasai Satoshi、Tsumura Yoshihiro、Aoki Hiroyuki
    • Journal Title

      Langmuir

      Volume: 37 Issue: 32 Pages: 9873-9882

    • DOI

      10.1021/acs.langmuir.1c01563

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fine-Structure Analysis of Perhydropolysilazane-Derived Nano Layers in Deep-Buried Condition Using Polarized Neutron Reflectometry2020

    • Author(s)
      Akutsu-Suyama Kazuhiro、Kira Hiroshi、Miyata Noboru、Hanashima Takayasu、Miyazaki Tsukasa、Kasai Satoshi、Yamazaki Dai、Soyama Kazuhiko、Aoki Hiroyuki
    • Journal Title

      Polymers

      Volume: 12 Issue: 10 Pages: 2180-2180

    • DOI

      10.3390/polym12102180

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neutron Reflectometry Tomography for Imaging and Depth Structure Analysis of Thin Films with In-Plane Inhomogeneity2020

    • Author(s)
      Aoki Hiroyuki、Ogawa Hiroki、Takenaka Mikihito
    • Journal Title

      Langmuir

      Volume: 37 Issue: 1 Pages: 196-203

    • DOI

      10.1021/acs.langmuir.0c02744

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 新しい中性子反射率法の開発と接着界面の構造解析への応用2023

    • Author(s)
      青木裕之, Yuwei Liu
    • Organizer
      第72回高分子討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Interface structure of epoxy adhesive studied by neutron reflectometry2023

    • Author(s)
      Hiroyuki Aoki, Yuwei Liu
    • Organizer
      European Conference on Neutron Scattering 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Accelerated data acquisition in neutron reflectometry by deep learning2022

    • Author(s)
      Hiroyuki Aoki
    • Organizer
      International Conference on Neutron Scattering 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 中性子反射率トモグラフィーによる高分子材料の界面イメージング2022

    • Author(s)
      青木裕之
    • Organizer
      日本顕微鏡学会 第78回学術講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 量子ビームによる高分子の表面・界面の構造とダイナミクスの解析2022

    • Author(s)
      青木裕之
    • Organizer
      21-2 高分子学会講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Spatially resolved neutron reflectometry by computed tomography2021

    • Author(s)
      Hiroyuki Aoki
    • Organizer
      Annual Meeting of the Open Reflectometry Standards Organisation 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 埋もれた界面を可視化する空間分解中性子反射率法の開発2020

    • Author(s)
      青木 裕之
    • Organizer
      第69回高分子討論会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2025-01-30  

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