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2015 Fiscal Year Annual Research Report

無機ナノ粒子のナノマトリックス構造を有するソフトマテリアルの創製

Research Project

Project/Area Number 26620176
Research InstitutionNagaoka University of Technology

Principal Investigator

河原 成元  長岡技術科学大学, 工学(系)研究科(研究院), 准教授 (00242248)

Project Period (FY) 2014-04-01 – 2016-03-31
Keywordsエラストマー / 無機ナノ粒子 / ナノマトリックス構造 / ラテックス / 動的粘弾性
Outline of Annual Research Achievements

無機ナノ粒子を平均直径1 um程度のゴム粒子と化学的に結合し、凝固することにより、無機ナノ粒子のナノマトリックス構造を有するエラストマーを調製した。アズキャストフィルムを調製し、動的粘弾性測定を行ったところ、ナノマトリックス構造を有するエラストマーは『力学エネルギーの散逸は高周波数で小さく、低周波数で大きくなる』というゴム材料の常識を覆す充填ゴムであることを確認した。この原因を究明するため動的粘弾性の温度および周波数依存性を測定し、横シフトファクター(aT)および縦シフトファクター(bT)を求めた。横シフトファクターは温度に対してWLF式に従って変化したが、縦シフトファクターは予想に反して温度に対して減少した。縦シフトファクターが温度に対して減少する現象はエネルギー弾性に起因するといわれていることから、ナノマトリックス構造を有するエラストマーはゴム由来のエントロピー弾性とナノマトリックス由来のエネルギー弾性の兼ね合いにより、損失弾性率(G”)の値が高周波数で大きく、低周波数で小さくなることが明らかとなった。

  • Research Products

    (14 results)

All 2015

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Acknowledgement Compliant: 5 results) Presentation (9 results) (of which Int'l Joint Research: 8 results,  Invited: 9 results)

  • [Journal Article] Nanomatrix Structure Formed by Graft Copolymerization of Styrene onto Fresh Natural Rubber2015

    • Author(s)
      Lina Fukuhara, Noriyuki Kado, N. T. Thuong, Surapich Loykulnant, Krisda Suchiva, Kenichiro Kosugi, Yoshimasa Yamamoto, Hiroyuki Ishii, Seiichi Kawahara
    • Journal Title

      Rubber Chem. Technol.

      Volume: 88 Pages: 117-124

    • DOI

      DOI: 10.5254/rct.14.85992

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Preparation and Properties of Natural Rubber with Filler Nanomatrix Structure2015

    • Author(s)
      N. H. Yusof, K. Noguchi, L. Fukuhara, Y. Yamamoto, S. Kawahara
    • Journal Title

      Colloid Polym. Sci.

      Volume: 293 Pages: 2249-2256

    • DOI

      DOI: 10.1007/s00396-015-3615-7

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Frozen Non-Equilibrium Structure for Anisotropically Deformed Natural Rubber with Nanomatrix Structure Observed by 3D FIB-SEM and Electron Tomography2015

    • Author(s)
      L. Fukuhara, K. Kosugi, Y. Yamamoto, H. Jinnai, H. Nishioka, H. Ishii, M. Fukuda, S. Kawahara
    • Journal Title

      Colloid Polym. Sci.

      Volume: 293 Pages: 2555-2563

    • DOI

      DOI: 10.1007/s00396-015-3631-7

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] FIB Processing for Natural Rubber with Nanomatrix Structure2015

    • Author(s)
      L. Fukuhara, K. Kosugi, Y. Yamamoto, H. Jinnai, H. Nishioka, H. Ishii, S. Kawahara
    • Journal Title

      Polymer

      Volume: 57 Pages: 143-149

    • DOI

      DOI: 10.1016/j.polymer.2014.11.020

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Preparation and Graft-Copolymerization of Hydrogenated Natural Rubber in Latex Stage2015

    • Author(s)
      N. T. Ha, K. Kaneda, Y. Naitoh, L. Fukuhara, K. Kosugi, S. Kawahara
    • Journal Title

      J. Appl. Polym. Sci.

      Volume: 132 Pages: 4235-42435

    • DOI

      DOI: 10.1002/app.42435

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Nanomatrix and Mechanical Properties of Natural Rubber2015

    • Author(s)
      Seiichi Kawahara
    • Organizer
      IRRDB International Rubber Conference 2015
    • Place of Presentation
      Ho Chi Minh, Vietnam
    • Year and Date
      2015-11-02 – 2015-11-06
    • Int'l Joint Research / Invited
  • [Presentation] Preparation and Properties of Natural Rubber with Filler Nanomatrix Structure2015

    • Author(s)
      Seiichi Kawahara
    • Organizer
      The 2nd Asia Pacific Rubber Conference (ARPC2015)
    • Place of Presentation
      Phuket, Thailand
    • Year and Date
      2015-10-15 – 2015-10-16
    • Int'l Joint Research / Invited
  • [Presentation] Viscoelastic Properties of Natural Rubber with Filler Nanomatrix Structure2015

    • Author(s)
      Seiichi Kawahara
    • Organizer
      The 4th Federation of Asian Polymer Societies International Polymer Congress (4FAPS-IPC2015)
    • Place of Presentation
      Putra World Trade Centre, Kuala Lumpur, Malaysia
    • Year and Date
      2015-10-05 – 2015-10-08
    • Int'l Joint Research / Invited
  • [Presentation] Viscoelastic Properties of Natural Rubber with Filler-nanomatrix Structure2015

    • Author(s)
      Seiichi Kawahara
    • Organizer
      The 2nd China International Congress on Composite Materials (CCCM-2)
    • Place of Presentation
      Jiangsu, China
    • Year and Date
      2015-09-21 – 2015-09-23
    • Int'l Joint Research / Invited
  • [Presentation] Mechanical Properties of Natural Rubber with Filler-nanomatrix Structure2015

    • Author(s)
      Seiichi Kawahara
    • Organizer
      International Rubber Conference 2015 (IRC 2015)
    • Place of Presentation
      Nürnberg, Germany
    • Year and Date
      2015-06-29 – 2015-07-02
    • Int'l Joint Research / Invited
  • [Presentation] Preparation and Properties of Natural Rubber with Organic-Inorganic Nanomatrix Structure2015

    • Author(s)
      Seiichi Kawahara
    • Organizer
      International Polymer Conference of Thailand (PCT-5)
    • Place of Presentation
      Bangkok, Thailand
    • Year and Date
      2015-06-18 – 2015-06-19
    • Int'l Joint Research / Invited
  • [Presentation] Viscoelastic Properties of Natural Rubber with Filler Nanomatrix Structure2015

    • Author(s)
      Seiichi Kawahara
    • Organizer
      31st International Conference of the Polymer Processing Society (PPS-31)
    • Place of Presentation
      Jeju, Korea
    • Year and Date
      2015-06-07 – 2015-06-11
    • Int'l Joint Research / Invited
  • [Presentation] フィラーナノマトリックス構造を有するゴムの物性2015

    • Author(s)
      河原成元
    • Organizer
      第64回高分子学会年次大会
    • Place of Presentation
      札幌コンベンションセンター
    • Year and Date
      2015-05-27 – 2015-05-29
    • Invited
  • [Presentation] Preparation and Properties of Natural Rubber with Filler Nanomatrix Structure2015

    • Author(s)
      Seiichi Kawahara
    • Organizer
      187th ACS Rubber Division Technical Meeting
    • Place of Presentation
      Greenville, South Carolina, USA
    • Year and Date
      2015-04-27 – 2015-04-30
    • Int'l Joint Research / Invited

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Published: 2017-01-06  

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