• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Structure and gelation mechanism of water soluble chemically modified celluloses in aqueous solution

Research Project

Project/Area Number 18K19107
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 35:Polymers, organic materials, and related fields
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Shikata Toshiyuki  東京農工大学, (連合)農学研究科(研究院), 教授 (10178858)

Project Period (FY) 2018-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Keywords化学修飾セルロース / 小角中性子散乱 / 回転拡散定数 / 並進拡散定数 / 棒状高分子 / 光散乱 / 小角中性散乱 / 溶存形態 / ゲル化機構 / 粘弾性 / 回転拡散
Outline of Final Research Achievements

The structure and conformation of cellulose ether (CE) samples, such as methyl cellulose (MC) and hydroxypropyl methyl cellulose (HpMC) ethers, dissolved in aqueous solutions have not been fully understood due to the long-accepted idea that CE samples are dissolved into water in a flexible chain-like conformation. In this study, we carried out small- and wide-angle neutron scattering experiments for some CE samples in dilute aqueous (D2O) solutions and clearly clarified that CE samples possess an extended long, rigid rod-like particle structure in aqueous solution.

Academic Significance and Societal Importance of the Research Achievements

セルロースの高度に発達した分子内及び分子間水素結合を、化学修飾で阻害する技術が確立している。特に、水に溶けるように水酸基がメチル化或いはヒドロキシプロピル化されたメチルセルロース(MC)やヒドロキシプロピルメチルセルロース(HPMC)等は、既に大量生産され、色々な実用品に用いられてきた実績があり、今後も水溶性天然高分子素材としての利用が期待される。これらMCやHPMC等のセルロースエーテル(CE)類の水溶液中での溶存形態について真の理解を得ることが本研究で達成された。この成果は,CE類の応用分野をさらに広げることにつながる。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (16 results)

All 2020 2019 2018 Other

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

  • [Journal Article] Cellulose Nanocrystals as a Model Substance for Rigid Rod Particle Suspension Rheology2020

    • Author(s)
      Hasegawa Hikaru、Horikawa Yoshiki、Shikata Toshiyuki
    • Journal Title

      Macromolecules

      Volume: 53 Issue: 7 Pages: 2677-2685

    • DOI

      10.1021/acs.macromol.9b02641

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reconsideration of the conformation of methyl cellulose and hydroxypropyl methyl cellulose ethers in aqueous solution2020

    • Author(s)
      Kengo Arai, Yoshiki Horikawa, Toshiyuki Shikata, Hiroki Iwase
    • Journal Title

      RSC Advances

      Volume: 10 Issue: 32 Pages: 19059-19066

    • DOI

      10.1039/d0ra03437a

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Molecular motions, structure and hydration behaviour of glucose oligomers in aqueous solution2019

    • Author(s)
      Arai Kengo、Shikata Toshiyuki
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 21 Issue: 45 Pages: 25379-25388

    • DOI

      10.1039/c9cp05214c

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anti-parallel dimer and tetramer formation of cyclic and open structure tertiary amides, N-methyl-2-pyrrolidone and N,N-dimethylacetamide, in solution of a non-polar solvent, benzene2019

    • Author(s)
      Tagawa Ayana、Shikata Toshiyuki
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 21 Issue: 39 Pages: 22081-22091

    • DOI

      10.1039/c9cp02500f

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular Association and Hydration Behavior of 2-n-Butoxyethanol in Aqueous Solution Nihon Reoroji Gakkaishi in 20192019

    • Author(s)
      Yuichi Satokawa, Toshiyuki Shikata
    • Journal Title

      Nihon Reoroji Gakkaishi

      Volume: 47 Pages: 17-23

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transport Properties of Commercial Cellulose Nanocrystals in Aqueous Suspension Prepared from Chemical Pulp via Sulfuric Acid Hydrolysis2018

    • Author(s)
      Kengo Arai, Yoshiki Horikawa, Toshiyuki Shikata
    • Journal Title

      ACS Omega

      Volume: 3 Issue: 10 Pages: 13944-13951

    • DOI

      10.1021/acsomega.8b01760

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationship between global and segmental dynamics of poly(butylene oxide) studied by broadband dielectric spectroscopy2018

    • Author(s)
      Urakawa Osamu、Yamane Minoru、Tomie Shota、Inoue Tadashi、Shikata Toshiyuki、Adachi Keiichiro
    • Journal Title

      The Journal of Chemical Physics

      Volume: 148 Issue: 3

    • DOI

      10.1063/1.5006364

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Structure of Chemically Modified Cellulose Ethers in Aqueous Solution2019

    • Author(s)
      Toshiyuki Shikata, Kengo Arai, and Hiroki Iwase
    • Organizer
      Okinawa Colloids 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 化学修飾セルロースの水溶液中での構造2019

    • Author(s)
      四方俊幸,新井健悟
    • Organizer
      第67回レオロジー討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] セルロースナノ結晶の水系懸濁液の粘弾性挙動2019

    • Author(s)
      四方俊幸,長谷川ひかる
    • Organizer
      セルロース学会第26回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] セルロースナノ結晶水系懸濁液のレオロジー2019

    • Author(s)
      四方俊幸,長谷川ひかる
    • Organizer
      第42回バイオレオロジー学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] セルロースナノクリスタル懸濁液の粘弾性挙動2019

    • Author(s)
      四方俊幸,新井健悟,長谷川ひかる
    • Organizer
      第68回高分子年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] セルロースナノクリスタルの水懸濁液中でのダイナミックス2018

    • Author(s)
      四方俊幸,新井健悟
    • Organizer
      第66レオロジー討論会
    • Related Report
      2018 Research-status Report
  • [Presentation] セルロースナノクリスタルの水懸濁液中でのダイナミックス2018

    • Author(s)
      四方俊幸,新井健悟,堀川祥生
    • Organizer
      第69回コロイドおよび界面化学討論会
    • Related Report
      2018 Research-status Report
  • [Presentation] セルロースナノクリスタルの水中でのダイナミックス2018

    • Author(s)
      四方俊幸
    • Organizer
      18-1高分子と水・分離に関する研究会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Remarks] 東京農工大学 四方研究室

    • URL

      http://web.tuat.ac.jp/~shikata/

    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-07-25   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi