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Importance of Nano-fiber Network in Nano-composite Materials and Development of Their Excellent Functions

Research Project

Project/Area Number 17H06238
Research Category

Grant-in-Aid for Challenging Research (Pioneering)

Allocation TypeSingle-year Grants
Research Field Polymer, Organic materials, and related fields
Research InstitutionKyoto University

Principal Investigator

tsujii Yoshinobu  京都大学, 化学研究所, 教授 (00217308)

Co-Investigator(Kenkyū-buntansha) 榊原 圭太  京都大学, 化学研究所, 助教 (20618649)
Project Period (FY) 2017-06-30 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥25,740,000 (Direct Cost: ¥19,800,000、Indirect Cost: ¥5,940,000)
Fiscal Year 2019: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2017: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Keywords複合材料 / セルロースナノファイバー / 濃厚ポリマーブラシ / ネットワーク / 高分子ナノコンポジット材料 / ボトルブラシ / ナノファイバーネットワーク / ナノファイバー / コンポジット / セルロース / 界面制御
Outline of Final Research Achievements

In this study, we successfully prepared well-defined nanocomposites, in which the fine nanofiber network of bacterial cellulose (BC) was embedded in matrices such as resins, elastomers and gels, by the stepwise solvent-exchange and in-situ polymerization method. We then discussed about the mechanical properties of the nanocomposites especially from the viewpoint of deformation behavior of the nanofiber network in matrices. The elastic modulus of the nanofiber network was shown to increase with the BC content according to the power law. The scaling exponent revealed the deformation mode depending on the elasticity of matrices; the modulus of network was drastically improved by shifting bending to stretching deformation. The key to reinforcement was the suppression of deformation of BC nanofiber network. This systematic understanding could provide design toward functionalized composites embedded with network structure.

Academic Significance and Societal Importance of the Research Achievements

ナノファイバーとマトリクスからなるポリマーナノコンポジットは、軽量・高強度材料として、金属の代替と成り得る大変魅力的な材料であるが、フィラーの性能が最大限に発揮されていなかった。本研究で扱った自然界の精緻なナノファイバーネットワークをフィラーとして用いたことで、分子からナノレベルで複合材料を議論でき、高強度化の材料設計指針を得ることが可能となった。本研究により、軽量高強度化による省エネルギー・排ガス削減や、潤滑応用などによる省エネ・長寿命化(よって、低環境負荷)などに貢献する材料開発を加速するものと期待できる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (30 results)

All 2020 2019 2018 2017 Other

All Journal Article (8 results) (of which Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (21 results) (of which Int'l Joint Research: 7 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] Simultaneous Nanofibrillation and Compounding of Wood Pulp Fibers Using Polyols as Plasticizers:Fabricating High-Performance Cellulose-Nanofiber-Reinforced Polyethylene Composites2020

    • Author(s)
      Sakakibara Keita、Moriki Yoshihito、Tsujii Yoshinobu
    • Journal Title

      Journal of Fiber Science and Technology

      Volume: 76 Issue: 1 Pages: 23-31

    • DOI

      10.2115/fiberst.2020-0002

    • NAID

      130007789678

    • ISSN
      2189-7654
    • Year and Date
      2020-01-15
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Well-defined monolith morphology regulates cell adhesion and its functions2019

    • Author(s)
      Yoshikawa, C.; Sakakibara, K.; Nakaji-Hirabayashi, T.; Yamazaki, T.; Tsujii, Y.
    • Journal Title

      Mate Sci Eng C.

      Volume: 105 Pages: 110108-110108

    • DOI

      10.1016/j.msec.2019.110108

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Main-Chain Stiffness of Cellulosic Bottlebrushes with Polystyrene Side Chains Introduced Regioselectively at the O-6 Position2019

    • Author(s)
      Kinose Yuji、Sakakibara Keita、Ogawa Hiroki、Tsujii Yoshinobu
    • Journal Title

      Macromolecules

      Volume: 52 Issue: 22 Pages: 8733-8740

    • DOI

      10.1021/acs.macromol.9b01628

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Lubrication Characteristics of Epoxy Resin‐Based Monolithic Thin Films with a Well‐Defined Porous Morphology2019

    • Author(s)
      Shimizu Yoshihiko、Sakakibara Keita、Yasuda Syuma、Tsujii Yoshinobu
    • Journal Title

      Advanced Engineering Materials

      Volume: 21 Issue: 10 Pages: 1900683-1900683

    • DOI

      10.1002/adem.201900683

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effective Reinforcement of Poly(methyl methacrylate) Composites with a Well-Defined Bacterial Cellulose Nanofiber Network2019

    • Author(s)
      Shimizu Yoshihiko、Sakakibara Keita、Akimoto Shuhei、Tsujii Yoshinobu
    • Journal Title

      ACS Sustainable Chemistry & Engineering

      Volume: 7 Issue: 15 Pages: 13351-13358

    • DOI

      10.1021/acssuschemeng.9b02602

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 平成30年度セルロース学会奨励賞紹介記事:複合材料におけるセルロースナノファイバーの分散・ネットワーク制御2019

    • Author(s)
      榊原圭太
    • Journal Title

      Cellul. Commun.

      Volume: 26 Pages: 105-105

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Preparation of High-Performance Polyethylene Composite Materials Reinforced with Cellulose Nanofiber: Simultaneous Nanofibrillation of Wood Pulp Fibers during Melt-Compounding Using Urea and Diblock Copolymer Dispersant2018

    • Author(s)
      Sakakibara Keita、Moriki Yoshihito、Tsujii Yoshinobu
    • Journal Title

      ACS Applied Polymer Materials

      Volume: 1 Issue: 2 Pages: 178-187

    • DOI

      10.1021/acsapm.8b00071

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Strain Hardening of Highly Stretchable Elastomeric Composites Reinforced with Well-Defined Nanofiber Network of Bacterial Cellulose2018

    • Author(s)
      Yoshihiko Shimizu, Keita Sakakibara, and Yoshinobu Tsujii
    • Journal Title

      Journal of Fiber Science and Technology (JFST)

      Volume: 74 Pages: 17-23

    • NAID

      130006309773

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Tribological Property of BottleBrush/ Cellulose Nanofiber Composite Gels2019

    • Author(s)
      ○Keita Sakakibara, Yoshihiko Shimizu, and Yoshinobu Tsujii
    • Organizer
      Okinawa Colloids 2019 Pre-Workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Well-Defined Soft & Porous Morphology on Lubrication by Using Epoxy-Based Monoliths2019

    • Author(s)
      ○Keita Sakakibara, Yoshihiko Shimizu, Yoshinobu Tsujii
    • Organizer
      International Tribology Conference(ITC) Sendai 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Control of Interfacial Properties Using Living Radical Polymerization Toward High-Performance Polymer Composite Materials2019

    • Author(s)
      ○Keita Sakakibara, Yoshinobu Tsujii
    • Organizer
      1stKIPS-LCPO Polymer Internationl Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] リビングラジカル重合法による界面設計と材料応用2019

    • Author(s)
      ○榊原圭太
    • Organizer
      令和元年度 九州地区高分子若手研究会・夏の講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 複合材料におけるセルロースナノファイバーの分散・ネットワーク制御2019

    • Author(s)
      ○榊原圭太
    • Organizer
      セルロース学会第26回年次大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] シリカモノリス粒子のサイズ排除クロマトグラフィー特性2019

    • Author(s)
      ○大久保遼、榊原圭太、石塚紀生、辻井敬亘
    • Organizer
      第18回高分子表面研究討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 耐酸塩基性を有する粒子状エポキシ系モノリスの合成とクロマトグラフィー応用2019

    • Author(s)
      ○榊原圭太、大久保遼、石塚紀生、辻井敬亘
    • Organizer
      第68回高分子討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] セルロースを主鎖とするヤヌス型ボトルブラシの合成とミクロ相分離構造2019

    • Author(s)
      ○石田久征、榊原圭太、辻井敬亘
    • Organizer
      第68回高分子討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ポリスチレンとポリ(ε-カプロラクトン)を位置選択的にグラフトしたセルロース系ボトルブラシの合成とミクロ相分離構造2019

    • Author(s)
      ◯石田久征、黄瀬雄司、榊原圭太、辻井敬亘
    • Organizer
      セルロース学会第26回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] クロマトグラフィー応用を目指したエポキシモノリス粒子の作製と機能化2019

    • Author(s)
      ○大久保遼・榊原圭太・石塚紀生・辻井敬亘
    • Organizer
      第65回高分子研究発表会(神戸)
    • Related Report
      2019 Annual Research Report
  • [Presentation] ポリスチレンとポリ(ε-カプロラクトン)を側鎖に有する位置選択的セルロース系ボトルブラシの合成2019

    • Author(s)
      ◯石田久征、黄瀬雄司、榊原圭太、辻井敬亘
    • Organizer
      2019年繊維学会年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高分子分散剤の活用によるセルロースナノファイバー強化樹脂複合材料の高性能化2018

    • Author(s)
      榊原圭太, 森木吉人, 辻井敬亘
    • Organizer
      第27回ポリマー材料フォーラム
    • Related Report
      2018 Annual Research Report
  • [Presentation] 高分子分散剤を用いたセルロースナノファイバー強化樹脂複合材料の開発:解繊助剤の効果2018

    • Author(s)
      榊原圭太, 森木吉人, 辻井敬亘
    • Organizer
      第25回セルロース学会年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 濃厚ポリマーブラシを付与したバクテリアセルロース複合ゲルの創製とトライボロジー特性2018

    • Author(s)
      榊原圭太, 森木吉人, 辻井敬亘
    • Organizer
      第25回セルロース学会年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Well-Defined Bacterial Cellulose-reinforced Polymer Nanocomposite Materials2017

    • Author(s)
      Yoshihiko Shimizu, Keita Sakakibara, Yoshinobu Tsujii
    • Organizer
      The 3rd Symposium on Bacterial NanoCellulose
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Preparation and Mechanical Property of Polymer Composite Materials Using Bacterial Cellulose Network2017

    • Author(s)
      Yoshihiko Shimizu, Keita Sakakibara, Yoshinobu Tsujii
    • Organizer
      The 15th International Conference on Advanced Materials
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Preparation of High-Density Polyethylene Nanocomposites Well Reinforced by Cellulose Nanofiber Using Diblock Copolymer-type Dispersants2017

    • Author(s)
      Keita Sakakibara, Yoshinobu Tsujii
    • Organizer
      The 15th International Conference on Advanced Materials
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nanoindentation of Polymer Monolith Materials2017

    • Author(s)
      Yoshihiko Shimizu, Keita Sakakibara, Yoshinobu Tsujii, and Ryuta Kasada
    • Organizer
      The 8th International Symposium of Advanced Energy Science
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] バクテリアセルロースで補強された重合誘起相分離型ポリマーモノリスのトライボロジー特性2017

    • Author(s)
      清水吉彦、榊原圭太、辻井敬亘
    • Organizer
      セルロース学会第24回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 濃厚ポリマーブラシ付与CNF/ボトルブラシ複合ゲルの創製とトライボロジー特性2017

    • Author(s)
      清水吉彦、榊原圭太、辻井敬亘
    • Organizer
      平成29年度繊維学会年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 濃厚ポリマーブラシを付与したCNFとボトルブラシ複合ゲルの創製とトライボロジー特性2017

    • Author(s)
      清水吉彦、榊原圭太、辻井敬亘
    • Organizer
      第66回高分子学会年次大会
    • Related Report
      2017 Annual Research Report
  • [Remarks] 京都大学化学研究所 材料機能化学研究系 高分子材料設計化学研究領域

    • URL

      http://www.cpm.kuicr.kyoto-u.ac.jp/

    • Related Report
      2017 Annual Research Report

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Published: 2017-07-21   Modified: 2021-02-19  

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