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Friction reduction mechanism by investigating liquid-solid interface

Research Project

Project/Area Number 18H03684
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 13:Condensed matter physics and related fields
Research InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

Seto Hideki  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (60216546)

Co-Investigator(Kenkyū-buntansha) 酒井 健一  東京理科大学, 理工学部先端化学科, 准教授 (20453813)
遠藤 仁  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 准教授 (40447313)
根本 文也  防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群), 電気情報学群, 助教 (50615672)
山田 悟史  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 准教授 (90425603)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥45,370,000 (Direct Cost: ¥34,900,000、Indirect Cost: ¥10,470,000)
Fiscal Year 2021: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2018: ¥27,820,000 (Direct Cost: ¥21,400,000、Indirect Cost: ¥6,420,000)
Keywords摩擦 / 潤滑 / ずり流動 / 中性子散乱 / 中性子反射率 / 界面活性剤 / トライボロジー / ソフトマター / レオロジー / ソフトマター物理
Outline of Final Research Achievements

We have introduced a cone-plate type rheometer at Neutron Reflectometer SOFIA at MLF, J-PARC to investigate interfacial structures by applying shear. By using this apparatus, a crystal growth of triacylglycerol, which is a main ingredient of chocolate, was investigated and showed that the type-V crystal grows from the solid interface by applying shear. The structural properties of aqueous solutions of polyoxyethylene and SDS was also investigated. The Bragg peak due to lamellar stacking of surfactant layers shifted to higher Q at low shear rate. At higher shear rate, the Bragg peak separated to two peaks and the high-Q peak remains with increasing shear rate. These behaviors are different from the structural change observed by SANS. Thus we concluded that the structural property at the interface is different from that in bulk.

Academic Significance and Societal Importance of the Research Achievements

この研究では、非イオン性界面活性剤の固体表面におけるずり流動による構造変化を「その場観察」できる、と言うことを示した。これまで「石鹸水はなぜ滑るのか」と言う問いに対して実験的事実をもって答えることはできなかったが、ずり流動場を与えながら中性子反射率測定を行うことにより、バルクの構造変化とは違う変化が起きていることを初めて明らかにした意義は大きい。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (13 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (10 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Neutron-Reflectometry-Based In Situ Structural Analysis of an Additive Aligning Agent for the Alignment of Nematic Liquid Crystals on Solid Substrates2022

    • Author(s)
      Fumiya Nemoto, Norifumi L. Yamada, Masahiro Hino, Hiroyuki Aoki, Hideki Seto
    • Journal Title

      Soft Matter

      Volume: 18 Issue: 3 Pages: 543-553

    • DOI

      10.1039/d1sm01355f

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Thickness and birefringence of thin films assessed by interferometry using a low-cost spectrometer2021

    • Author(s)
      Fumiya Nemoto
    • Journal Title

      Spectroscopy Letters

      Volume: 54 Issue: 9 Pages: 707-714

    • DOI

      10.1080/00387010.2021.1991382

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Installation of a Rheometer on Neutron Reflectometer SOFIA at J-PARC toward Rheo-NR and Observation of the Crystallization Behavior of Cocoa Butter in Chocolate2021

    • Author(s)
      Nemoto Fumiya、Yamada Norifumi L.、Takabatake Fumi、Seto Hideki
    • Journal Title

      JPS Conference Proceedings

      Volume: 33 Pages: 011077-011077

    • DOI

      10.7566/jpscp.33.011077

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ずり流動と中性子反射率の同時測定による界面活性剤の表面吸着構造変化観察2022

    • Author(s)
      高畠芙弥, 根本文也, 山田悟史, 瀬戸秀紀
    • Organizer
      日本物理学会 第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ずり流動による界面活性剤の表面吸着構造変化2021

    • Author(s)
      高畠芙弥, 根本文也, 山田悟史, 瀬戸秀紀
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 中性子反射率計SOFIAを利用したチョコレートの結晶化観察2020

    • Author(s)
      根本文也
    • Organizer
      PF研究会「量子ビームを活用した食品科学」
    • Related Report
      2019 Annual Research Report
  • [Presentation] ずり流動下における界面活性剤の表面吸着構造測定2019

    • Author(s)
      高畠 芙弥、根本 文也、山田 悟史、瀬戸 秀紀
    • Organizer
      つくばソフトマター研究会2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 中性子反射率計を用いたずり流動下における界面活性剤の表面吸着構造測定2019

    • Author(s)
      高畠芙弥、根本文也、山田悟史、瀬戸秀紀
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Neutron reflectometry of surfactant aggregates on solid surface under shear flow2019

    • Author(s)
      Fumi Takabatake, Fumiya Nemoto, Norifumi L. Yamada, Hideki Seto
    • Organizer
      OKINAWA Colloids 2019 Pre-workshop -5th International Mini-symposium on Surface Forces-
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 中性子反射率計SOFIAへのレオメータの設置とココアバター 結晶化への応用2019

    • Author(s)
      根本 文也, 高畠 芙弥, 山田 悟史, 瀬戸 秀紀
    • Organizer
      つくばソフトマター研究会2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] Installation of Rheometer on BL16 SOFIA at MLF J-PARC and Effect of Shear Flow on Crystallization of Chocolate2019

    • Author(s)
      Fumiya Nemoto, Norifumi L. Yamada, Fumi Takabatake, Hideki Seto
    • Organizer
      The 3rd J-PARC Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 中性子反射率計へのレオメータの設置とチョコレート結晶化観察への応用2019

    • Author(s)
      根本文也
    • Organizer
      非線形ソフトマター研究会2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 水上を泳ぐ液滴の運動モード変化および界面活性剤水溶液の摩擦と潤滑2019

    • Author(s)
      高畠芙弥
    • Organizer
      同志社大学生命物理科学セミナー
    • Related Report
      2018 Annual Research Report
    • Invited

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Published: 2018-04-23   Modified: 2023-01-30  

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