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Rheo-optical study on internal filler structures in rubber composites with terahertz polarization spectroscopy

Research Project

Project/Area Number 18H01190
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 13040:Biophysics, chemical physics and soft matter physics-related
Research InstitutionKeio University

Principal Investigator

Okano Makoto  慶應義塾大学, 理工学部(矢上), 講師 (10612525)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2019: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2018: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
Keywordsテラヘルツ偏光計測 / 流動光学 / ゴム複合材料 / テラヘルツ光弾性 / 黒色ゴム / 応力軟化 / 応力緩和 / 高分子材料 / 高分子複合材料 / テラヘルツ分光 / 偏光計測
Outline of Final Research Achievements

We studied the relationship between carbon black fillers and host rubber matrices in a carbon-black-rubber composite, which is one of the typical polymer composites, with a spatio-temporal resolved terahertz polarization spectroscopy. We focus on the investigation of change in internal filler structures during two characteristic dynamical mechanical responses, i.e., the stress relaxation and the stress softening. Through the development of high-speed, high precision terahertz polarimeter and the spectral analysis based on a combination of Monte-Carlo simulation and effective medium theory, we systematically revealed the change in internal filler structures due to the mechanical responses. Our findings would provide a new perspective for the investigation of the relationship between the fillers and rubber molecules in the black rubbers during dynamical, mechanical responses.

Academic Significance and Societal Importance of the Research Achievements

カーボンブラックフィラー添加ゴムは我々の日常生活に欠かせない物質であるが、その内部状態については未解明な点も残っている。本研究では、内部フィラー構造を敏感に検出できるテラヘルツ光に着目し、マクロな力学応答にともなうミクロな内部フィラー構造の変化を実験的に観測することに成功した。本研究のマクロな特性からミクロな構造を推定するというアプローチは、ミクロな構造の観察からマクロな力学応答を推定する従来の方法とは大きく異なるため、従来の方法に対して相補的な情報を与えることが期待できる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report

Research Products

(23 results)

All 2021 2020 2019 2018

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (18 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results)

  • [Journal Article] Evaluation of Crystallinity and Hydrogen Bond Formation in Stereocomplex Poly(lactic acid) Films by Terahertz Time-Domain Spectroscopy2020

    • Author(s)
      Hirata Junya、Kurokawa Naruki、Okano Makoto、Hotta Atsushi、Watanabe Shinichi
    • Journal Title

      Macromolecules

      Volume: 53 Pages: 7171-7177

    • DOI

      10.1021/acs.macromol.0c00237

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Real-Time Monitoring of Structural Changes in Poly(lactic acid) during Thermal Treatment by High-Speed Terahertz Time-Domain Spectroscopy for Nondestructive Inspection2019

    • Author(s)
      Nakamura Madoka、Okano Makoto、Watanabe Shinichi
    • Journal Title

      ACS Applied Polymer Materials

      Volume: 1 Pages: 3008-3016

    • DOI

      10.1021/acsapm.9b00703

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] テラヘルツ偏光計測による高分子材料の内部異方性検査2019

    • Author(s)
      岡野真人、渡邉紳一
    • Journal Title

      プラスチックス

      Volume: 10 Pages: 22-25

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Internal Status of Visibly Opaque Black Rubbers Investigated by Terahertz Polarization Spectroscopy: Fundamentals and Applications2018

    • Author(s)
      M. Okano, S. Watanabe
    • Journal Title

      Polymers

      Volume: 11 Pages: 9-9

    • DOI

      10.3390/polym11010009

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inspection of internal filler alignment in visibly opaque carbon-black rubber composites by terahertz polarization spectroscopy in reflection mode2018

    • Author(s)
      M. Okano, S. Watanabe
    • Journal Title

      Polymer Testing

      Volume: 72 Pages: 196-201

    • DOI

      10.1016/j.polymertesting.2018.10.020

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 黒色ゴムの応力緩和に伴うテラヘルツ周波数帯複屈折変化の温度依存性2021

    • Author(s)
      神田龍星, 岡野真人, 渡邉紳一
    • Organizer
      日本物理学会第76回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Evaluation The Hydrogen Bonding in Stereocomplex Poly(lactic acid) by Terahertz Spectroscopy2021

    • Author(s)
      J. Hirata, N. Kurokawa, M. Okano, A. Hotta, S. Watanabe
    • Organizer
      APS March Meeting 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] テラヘルツ偏光計測によるゴム伸縮過程における内部カーボンナノフィラー構造変化の推定2020

    • Author(s)
      水田圭祐, 岡野真人, 森本崇宏, 阿多誠介, 渡邉紳一
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 複素誘電率スペクトル解析によるポリ乳酸薄膜の熱誘起状態変化の観測2020

    • Author(s)
      岡野真人, 中村円香, 渡邉紳一
    • Organizer
      テラヘルツ科学の最先端VI
    • Related Report
      2020 Annual Research Report
  • [Presentation] テラヘルツ偏光計測技術を用いた黒色ゴムの内部検査法の開発2020

    • Author(s)
      岡野真人
    • Organizer
      第51回エラストマーの補強研究分科会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 伸縮過程にともなう黒色ゴムのテラヘルツ光学伝導度の不可逆変化2020

    • Author(s)
      水田圭祐、岡野真人、森本崇宏、阿多誠介、渡邉紳一
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高速テラヘルツ時間領域分光装置によるポリ乳酸の熱誘起構造変化の実時間観測2019

    • Author(s)
      岡野真人、中村円香、渡邉紳一
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] テラヘルツ時間領域分光法を用いたステレオコンプレックス型ポリ乳酸の結晶化度の評価2019

    • Author(s)
      平田純也、黒川成貴、岡野真人、堀田篤、渡邉紳一
    • Organizer
      第68回高分子討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] テラヘルツ偏光計測を用いたゴム複合材料内部のゴム-フィラー間相互作用の研究2019

    • Author(s)
      岡野真人、渡邉紳一
    • Organizer
      第30回エラストマー討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] テラヘルツ偏光計測による繰り返し伸縮に伴う黒色ゴム内部構造変化の研究2019

    • Author(s)
      辻本敬斗, 森脇淳仁,藤井美佐子, 岡野真人,渡邉紳一
    • Organizer
      日本物理学会 第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] テラヘルツ偏光測定を用いた黒色ゴムの応力緩和現象の観察2019

    • Author(s)
      森脇淳仁, 岡野真人, 渡邉紳一
    • Organizer
      日本物理学会 第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] テラヘルツ光学伝導度測定を通じた黒色ゴムの内部伝導ネットワーク構造の推定2019

    • Author(s)
      岡野真人, 渡邉紳一
    • Organizer
      日本物理学会 第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 反射型テラヘルツ偏光分光装置を用いた黒色ゴム複合材料の内部フィラー配向状態の観測2019

    • Author(s)
      岡野真人, 渡邉紳一
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Real-Time Observation of Thermally-Induced Structural Changes of Poly(Lactic Acid) Thin Film by Terahertz Spectroscopy2018

    • Author(s)
      M. Nakamura, M. Okano, and S. Watanabe
    • Organizer
      2018 MRS Fall Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optical Response Change Of Black Rubbers Under Cyclic Deformation Investigated By Terahertz Polarization Spectroscopy2018

    • Author(s)
      T. Tsujimoto, A. Moriwaki, M. Fujii, M. Okano, and S. Watanabe
    • Organizer
      IRMMW THz-2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Internal Strain Imaging of Visibly-Opaque Black Rubbers by Terahertz Polarization Spectroscopy2018

    • Author(s)
      A. Moriwaki, M. Okano, and S. Watanabe
    • Organizer
      CLEO-PR 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of strain-induced anisotropic percolative conduction in rubber-filler composites by terahertz polarization spectroscopy2018

    • Author(s)
      M. Okano and S. Watanabe
    • Organizer
      EXCON 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] テラヘルツ偏光分光による黒色ゴム複合材料の研究:基礎物理と応用展開2018

    • Author(s)
      岡野真人
    • Organizer
      テラヘルツ科学の最先端V
    • Related Report
      2018 Annual Research Report
    • Invited

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Published: 2018-04-23   Modified: 2022-01-27  

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