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Mechanism of property changes in barks controlled by humidity

Research Project

Project/Area Number 18K14501
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 40020:Wood science-related
Research InstitutionKyoto University (2019-2021)
The University of Tokyo (2018)

Principal Investigator

Kobayashi Kayoko  京都大学, 農学研究科, 助教 (00806416)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords木材 / 樹皮 / 物性 / 乾燥 / 固体NMR / 木材組織 / 含水率 / バイオメカニクス / 水和
Outline of Final Research Achievements

Barks show great toughness, which is quite different from wood and other cellulosic materials, but they lose this unique property when they are dried. We investigated the mechanism of this property changed induced by humidity. Suberin, which is a major component in barks, is hydrophobic, but our analysis indicates that small amount of water interact with the part of suberin component. This interaction would change the mechanical property of the barks.

Academic Significance and Societal Importance of the Research Achievements

木質バイオマスやセルロースを原料とした新規材料の開発は、カーボンニュートラルの観点から重要である。しかしながら、合成高分子のような高靭性を示す材料を作ることは難しく、セルロース材料開発におけえる課題のひとつとなっている。本研究で示された樹皮が高い靭性を示すメカニズムは、この課題解決に貢献するものであり、これまでとは全く異なるセルロース材料の設計を可能にすることが期待される。

Report

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

    (3 results)

All 2021

All Presentation (3 results) (of which Invited: 1 results)

  • [Presentation] 含水率を変化させた木材の固体NMRによる分子運動性解析2021

    • Author(s)
      鈴木彩奈、久住亮介、和田昌久、小林加代子
    • Organizer
      木材学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 固体NMRによる木材の分子運動性解析2021

    • Author(s)
      小林加代子
    • Organizer
      日本材料学会木質材料部門委員会定例研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] ヒノキ正常材およびあて材の固体NMR解析2021

    • Author(s)
      鈴木彩奈、長峰亮、小林加代子、久住亮介、和田昌久
    • Organizer
      日本木材学会
    • Related Report
      2020 Research-status Report

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

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