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Elucidation of Polymer Crystal Nucleation in Solution by Novel In-situ Nano-optical Measurement System and Its Application to Nanoporous Fabrication Methods

Research Project

Project/Area Number 21H02006
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 35020:Polymer materials-related
Research InstitutionNational Institute for Materials Science

Principal Investigator

SAMITSU Sadaki  国立研究開発法人物質・材料研究機構, 高分子・バイオ材料研究センター, 主幹研究員 (80432350)

Co-Investigator(Kenkyū-buntansha) 廣井 卓思  芝浦工業大学, 工学部, 准教授 (20754964)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2022: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2021: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Keywordsメソ多孔体 / 溶媒誘起結晶化 / 動的光散乱 / ナノ結晶 / 核生成 / ポリエーテルスルホン / 微粒子 / ラマン分光 / 多孔質材料 / 高分子 / 結晶 / 多孔体
Outline of Research at the Start

溶液中で高分子が核生成・結晶成長すると、結晶粒の連結を経て固液相分離と呼ばれるミクロな構造形成が起きる。この構造形成に大きく影響する核生成過程には未解明な部分が多い。本研究では、新たに構築する光ナノ計測系を用いて結晶化の初期過程を時分割・その場計測することで、溶液中での高分子核生成の機構解明に取り組む。結晶核の設計で固液相分離の構造を自在に制御し、ナノ多孔化技術やナノ構造体形成への展開を目指す。

Outline of Final Research Achievements

When polymers crystallize in solution, solid-liquid phase separation occurs and form microstructure linking small crystalline grains. The crystal nucleation process, which greatly affects the structure formation, is still largely unknown. In this study, we constructed a new nano-optical measurement system that can simultaneously measure dynamic light scattering and Raman scattering in order to elucidate the nucleation process that occurs in the early stage of crystallization. By enabling time-resolved and in-situ measurements of the crystallization process, we have established a methodology for elucidating the mechanism of polymer nucleation in solution.

Academic Significance and Societal Importance of the Research Achievements

サブミクロンスケールの粒子サイズを評価する動的光散乱と分子構造の情報を与えるラマン散乱は相補的な情報を与えるが、光学系が異なるため同時測定の実例は少ない。本研究では動的光散乱とラマン散乱の同時計測ナノ光学計測系を構築した。この計測システムは核形成過程だけでなく、様々な材料・分子現象の機構解明に利用することができる。さらに、本検討から着想を得て、コヒーレントなラマン散乱強度の時間相関関数を計測する『動的ラマン散乱』という新たな分子ダイナミクスの計測手法を開発できた。新たな計測法の開発は材料科学に新たな知見を与え、学術的な意義が高い。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (17 results)

All 2023 2022 2021 Other

All Journal Article (7 results) (of which Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] Dynamic Raman Scattering: Molecular-Selective Correlation Spectroscopy for Diffusion Dynamics in Complex Systems2023

    • Author(s)
      Hiroi Takashi、Samitsu Sadaki、Ishioka Kunie、Kano Hideaki
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 127 Issue: 21 Pages: 10245-10252

    • DOI

      10.1021/acs.jpcc.3c01824

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrophilic amorphous crosslinked membranes with subnanometer pores prepared by plasma-enhanced chemical vapor deposition and their shape-selective alcohol permeation2023

    • Author(s)
      Samitsu Sadaki、Ismail Edhuan、Fujii Yoshihisa、Ichinose Izumi
    • Journal Title

      Journal of Membrane Science

      Volume: 680 Pages: 121737-121737

    • DOI

      10.1016/j.memsci.2023.121737

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Solvent Effects during the Flash-Freezing Fabrication of Mesoporous Polystyrenes2022

    • Author(s)
      Samitsu Sadaki、Pruksawan Sirawit、Yokoyama Hideaki、Ichinose Izumi
    • Journal Title

      Macromolecules

      Volume: 55 Issue: 9 Pages: 3734-3746

    • DOI

      10.1021/acs.macromol.2c00535

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Calibration for a count rate-dependent time correlation function and a random noise reduction in pulsed dynamic light scattering2022

    • Author(s)
      Hiroi Takashi、Samitsu Sadaki、Kano Hideaki、Ishioka Kunie
    • Journal Title

      Analytical Sciences

      Volume: 38 Issue: 3 Pages: 607-611

    • DOI

      10.1007/s44211-022-00071-0

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Highly stretchable and self-healable polymer gels from physical entanglements of ultrahigh?molecular weight polymers2022

    • Author(s)
      Kamiyama Yuji、Tamate Ryota、Hiroi Takashi、Samitsu Sadaki、Fujii Kenta、Ueki Takeshi
    • Journal Title

      Science Advances

      Volume: 8 Issue: 42

    • DOI

      10.1126/sciadv.add0226

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fabrication of mesoporous crystalline microparticles of poly(ether sulfone) via solvent-induced crystallization2022

    • Author(s)
      Samitsu Sadaki
    • Journal Title

      Polymer

      Volume: 248 Pages: 124744-124744

    • DOI

      10.1016/j.polymer.2022.124744

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Prediction of the coefficient of linear thermal expansion for the amorphous homopolymers based on chemical structure using machine learning2021

    • Author(s)
      Gracheva Ekaterina、Lambard Guillaume、Samitsu Sadaki、Sodeyama Keitaro、Nakata Ayako
    • Journal Title

      Science and Technology of Advanced Materials: Methods

      Volume: 1 Issue: 1 Pages: 213-224

    • DOI

      10.1080/27660400.2021.1993729

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 溶媒誘起結晶化を利用したナノ多孔ポリエーテルスルホンの創製2023

    • Author(s)
      佐光 貞樹
    • Organizer
      2023年度高分子基礎物性研究会・高分子計算機科学研究会 合同討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 動的ラマン散乱による高分子選択的粒径計測法の開発2022

    • Author(s)
      廣井 卓思、佐光 貞樹、石岡 邦江、加納 英明
    • Organizer
      第71回高分子討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 分子選択的拡散ダイナミクス計測:動的ラマン散乱法2022

    • Author(s)
      廣井 卓思、佐光 貞樹、石岡 邦江、加納 英明
    • Organizer
      第16回分子科学討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 動的光散乱法の最前線2022

    • Author(s)
      廣井卓思
    • Organizer
      Optics & Photonics Japan 2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 散乱法:反「1分子・見える化」2022

    • Author(s)
      廣井卓思
    • Organizer
      第14回 光塾
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Simple Scalable Fabrication of Nanoporous Polymers for Separation and Purification Technology.2021

    • Author(s)
      Sadaki Samitsu
    • Organizer
      5th International Conference on Global Sustainability and Chemical Engineering (ICGSCE 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 全光子記録形式によるノイズフリー動的光散乱法2021

    • Author(s)
      廣井 卓思, 佐光 貞樹, 石岡 邦江
    • Organizer
      第70回高分子学会年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 全光子記録方式によるノイズフリー動的光散乱法2021

    • Author(s)
      廣井 卓思, 佐光 貞樹, 石岡 邦江.
    • Organizer
      日本化学会 第101春季年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Post-processing noise reduction by all-photon recording in CW and pulsed dynamic light scattering2021

    • Author(s)
      Takashi Hiroi, Sadaki Samitsu, Kunie Ishioka, Hideaki Kano
    • Organizer
      Pacifichem2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Remarks]

    • URL

      https://www.nims.go.jp/group/Data-driven_Polymer_Design/index.html

    • Related Report
      2022 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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