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Cellulose acetate membranes with TEMPOoxidized cellulose nanofibrils containing alkyl ammonium carboxylates

Research Project

Project/Area Number 18K14502
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 40020:Wood science-related
Research InstitutionKyoto Institute of Technology

Principal Investigator

Shimizu Michiko  京都工芸繊維大学, 繊維学系, 准教授 (30759965)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsセルロースナノファイバー / 限外ろ過膜 / 表面改質 / 酢酸セルロース / 限外濾過膜 / 抗菌性 / 原子間力顕微鏡 / 水処理膜
Outline of Final Research Achievements

In this study, CA membranes were blended with carboxylated cellulose nanofibrils (T-CNFs) containing
quaternary alkyl ammonium (QA) carboxylates to improve their water flux. Positron annihilation lifetime spectroscopy. This indicated that the CA membranes had larger and fewer pores when using the T-CNFs containing QAs with longer alkyl chains. The membranes have a potentiality to be used as ultrafiltration membranes. The tensile strength, strain to failure, and work of fracture of the CA membranes increased when blended with T-CNFs. Force measurements using the AFM colloidal probe technique showed that the structural differences observed among the blended membranes may be due to the affinity between CA and T-CNF containing QAs with different alkyl chain lengths.

Academic Significance and Societal Importance of the Research Achievements

21世紀は水の世紀とも呼ばれるほど安全な水を確保することの需要は高まっている。本研究では浄水器や下水処理場などで使用されている限外ろ過膜を対象に、高機能性を有する新たな水処理膜の開発を目指した。その結果、フィルター性能は保持したまま強度が増加した水処理膜を作製することができた。強度の増加により水処理膜を長期使用できれば、使い捨てである製品の環境負荷を下げることが可能となる。また本研究に用いたセルロースナノファイバーは環境に配慮したバイオマス素材であり、環境調和型社会の構築にも貢献できる結果といえる。

Report

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

    (7 results)

All 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] RISE Research Institutes of Sweden(スウェーデン)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Research Institutes of Sweden(スウェーデン)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Preparation and characterization of cellulose acetate membranes with TEMPO-oxidized cellulose nanofibrils containing alkyl ammonium carboxylates.2020

    • Author(s)
      Shimizu, M., Alvarez-Asencio, R., Nordgren, N., Uedono, A.
    • Journal Title

      Cellulose

      Volume: 27 Issue: 3 Pages: 1357-1365

    • DOI

      10.1007/s10570-019-02872-5

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Thermal and electrical properties of nanocellulose films with different interfibrillar structures of alkyl ammonium carboxylates2018

    • Author(s)
      Shimizu Michiko, Kusumi Ryosuke, Saito Tsuguyuki, Isogai Akira
    • Journal Title

      Cellulose

      Volume: 26 Issue: 3 Pages: 1657-1665

    • DOI

      10.1007/s10570-018-2155-y

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Cellulsose acetate/nanocellulose composite membranes for water purification2019

    • Author(s)
      Shimizu, M., Alvarez-Asencio, R., Nordgren, N., Uedono, A.
    • Organizer
      6th EPNOE International Polysaccharide Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 水処理膜への応用を目指したCNF/CA複合膜の作製と特性解析2018

    • Author(s)
      清水美智子、Alvarez-Asencio Ruben, Nordgren Niklas,上殿明良
    • Organizer
      セルロース学会第25回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] CNF/CA複合水処理膜の作製と特性解析2018

    • Author(s)
      清水美智子、Alvarez-Asencio Ruben, Nordgren Niklas,上殿明良
    • Organizer
      化学工学会第50回秋季大会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2023-03-23  

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