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Development of efficient and high-speed dehydration technique for bionanofiber/water dispersion using electrophoretic deposition

Research Project

Project/Area Number 22K20592
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0603:Forestry and forest products science, applied aquatic science, and related fields
Research InstitutionOsaka University

Principal Investigator

Kasuga Takaaki  大阪大学, 産業科学研究所, 助教 (40915584)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsセルロースナノファイバー / 電気泳動堆積 / 電着 / 電気浸透 / ハイドロゲル / 脱水処理 / 脱水 / 配向制御 / 高分子フィルム / ナノセルロース / 脱水・濃縮技術
Outline of Research at the Start

セルロースナノファイバー(CNF)とは主に木材を原料とする機能性ナノ繊維である。軽量、高強度、高耐熱且つ持続可能であることから実用化が進められているが、原料となるCNF/水分散液は98%以上が水であり、脱水工程の省エネルギー化、高速化技術が求められている。本研究では、CNFの電気泳動堆積現象を用いた新規脱水・濃縮技術の創成を目指す。電気泳動堆積現象に寄与する電気泳動的作用と電気化学的作用を切り分け、最重要となるパラメータを解明する。

Outline of Final Research Achievements

Dehydration of a cellulose nanofiber (CNF)/water dispersion requires large amounts of energy and time due to the high hydrophilicities and high specific surface areas of the CNFs. In this study, electrodeposition of CNFs was evaluated as a dehydration method. Electrodeposition at a DC voltage of 10 V on a 0.2 wt% CNF/water dispersion resulted in a concentration of ~1.58 wt% in 1 h. The dehydration energy efficiency was ~300 times greater than that of dehydration by evaporation. This study provides a new method for dehydration and reuse of TEMPO-oxidized CNF/water dispersions and provides new insights into control of the hierarchical structures of CNFs by electrodeposition.

Academic Significance and Societal Importance of the Research Achievements

セルロースナノファイバーは高機能かつ持続可能なナノ繊維だが、製造工程上水を多量に含んだ水分散液の状態を出発原料として利用する必要がある。加えてセルロースナノファイバーは水との親和性が高いため脱水に多大なエネルギー及び時間が必要であり、フィルムや乾燥体、樹脂複合材製造に向けた脱水工程の効率化が求められている。本成果によりCNFの産業利用におけるコスト要因である脱水工程の改善が期待でき、持続可能な社会の実現への貢献が期待できる。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (10 results)

All 2023 2022

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results)

  • [Journal Article] Wirelessly Powered Sensing Fertilizer for Precision and Sustainable Agriculture2023

    • Author(s)
      Kasuga Takaaki、Mizui Ami、Koga Hirotaka、Nogi Masaya
    • Journal Title

      Advanced Sustainable Systems

      Volume: 8 Issue: 1 Pages: 2300314-2300314

    • DOI

      10.1002/adsu.202300314

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] One-Pot Hierarchical Structuring of Nanocellulose by Electrophoretic Deposition2022

    • Author(s)
      Kasuga Takaaki、Saito Tsuguyuki、Koga Hirotaka、Nogi Masaya
    • Journal Title

      ACS Nano

      Volume: 16 Issue: 11 Pages: 18390-18397

    • DOI

      10.1021/acsnano.2c06392

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] One-step hierarchical structuring of nanocellulose by electrophoretic deposition and its applications2023

    • Author(s)
      Takaaki Kasuga, Tsuguyuki Saito, Hirotaka Koga, Masaya Nogi
    • Organizer
      International Cellulose Conference 2022+1
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ナノセルロースの電気的配向・立体成型技術2023

    • Author(s)
      春日貴章
    • Organizer
      第62回機能紙研究発表
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] ナノセルロースの電気的応用2023

    • Author(s)
      春日貴章
    • Organizer
      第3回 融合超越シンポジウム
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Degradable soil moisture sensor for sustainable and smart agriculture2023

    • Author(s)
      Takaaki Kasuga, Ami Mizui, Hirotaka Koga, Masaya Nogi
    • Organizer
      The 27th SANKEN International Symposium, The 22nd SANKEN Nanotechnology International Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electrophoretic deposition of nanocellulose for multi-scale structure control2023

    • Author(s)
      Takaaki Kasuga, Tsuguyuki Saito, Hirotaka Koga, Masaya Nogi
    • Organizer
      ACS Spring 2024 Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Horizontal, random, and vertical orientation control of nanocellulose by electrophoretic deposition2023

    • Author(s)
      Takaaki KASUGA, Tsuguyuki SAITO, Hirotaka KOGA, Masaya NOGI
    • Organizer
      The 26th SANKEN International Symposium, The 21th SANKEN Nanotechnology International Symposium
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 簡便且つスケーラブルなセルロースナノファイバーの電気的配向・高次構造制御技術2022

    • Author(s)
      春日貴章
    • Organizer
      ふじのくにCNF総合展示会 2022
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 木材由来ナノ繊維の自在な配向制御やパターニングを可能とする電気泳動的構造制御技術2022

    • Author(s)
      春日貴章
    • Organizer
      新技術説明会
    • Related Report
      2022 Research-status Report

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Published: 2022-09-01   Modified: 2025-01-30  

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