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Role of Surfactants in Aqueous Suspension of Carbon Nanomaterials

Research Project

Project/Area Number 24710132
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Nanomaterials/Nanobioscience
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

KATO Haruhisa  独立行政法人産業技術総合研究所, 計測標準研究部門, 主任研究員 (10462839)

Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywords分散性 / ナノ材料 / 分散剤 / 動的光散乱 / ゼータ電位 / 磁場勾配核磁気共鳴スペクトル / DLS / PFG-NMR / ナノ炭素材料 / ナノカーボン / DLVO理論
Research Abstract

Aqueous suspensions of carbon nanomaterials were prepared with different industrial surfactants. The pulsed field gradient (PFG)-NMR method showed that the mole fraction ratios of secondary particles composed of carbon nanomaterials and surfactant were from approximately 10:1 to 5:1 for nanocarbon/surfactants. When the carbon nanomaterials were dispersed in the aqueous surfactant solutions, the transverse relaxation times of the surfactants were dramatically reduced, indicating that all the surfactant molecules were bound to or interacted. After the dispersions were mixed with aqueous solutions of other surfactants, the first adsorbed surfactants remained strongly adsorbed to the surface of carbon nanomaterilas and were not exchanged. Our results are significant for determining the inherent toxicity of carbon nanomaterials in vivo.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • Research Products

    (7 results)

All 2014 2013

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (5 results)

  • [Journal Article] Behavior of surfactants in aqueous dispersions of single-walled carbon nanotubes2014

    • Author(s)
      H. Kato, A. Nakmura, M. Horie
    • Journal Title

      RSC Adv

      Volume: 4 Pages: 2129-2129

    • Related Report
      2013 Final Research Report
  • [Journal Article] Behavior of surfactants in aqueous dispersions of single-walled carbon nanotubes2014

    • Author(s)
      Haruhisa Kato, Ayako Nakamuraa, and Masanori Horie
    • Journal Title

      RSC Advances

      Volume: 4 Pages: 2129-2136

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] Observation of Behavior of Industrial Dispersantin Aqueous Suspension of Carbon Nanotubes2014

    • Author(s)
      H. Kato, A. Nakmura
    • Organizer
      NANOENERGY 2014
    • Place of Presentation
      UK
    • Related Report
      2013 Final Research Report
  • [Presentation] Observation of Behavior of Industrial Dispersant in Aqueous Suspension of Carbon Nanotubes2014

    • Author(s)
      Haruhisa Kato, Ayako Nakamura
    • Organizer
      Nanoenergy 2014
    • Place of Presentation
      UK
    • Related Report
      2013 Annual Research Report
  • [Presentation] Preparation and characterization of carbon nanomaterials dispersion using biocompatible surfactant2013

    • Author(s)
      H. Kato
    • Organizer
      Third International Conference on Multifunctional, Hybrid and Nanomaterials
    • Place of Presentation
      italy
    • Related Report
      2013 Final Research Report 2012 Research-status Report
  • [Presentation] 高分子分散剤で分散された液中ナノ材料分散液の特性解析2013

    • Author(s)
      加藤晴久, 中村文子
    • Organizer
      第62回高分子学会年次大会
    • Place of Presentation
      京都
    • Related Report
      2013 Final Research Report
  • [Presentation] 高分子分散剤による液中ナノ材料分散液の特性解析2013

    • Author(s)
      加藤晴久、中村文子
    • Organizer
      第62回高分子学会年次大会
    • Place of Presentation
      京都
    • Related Report
      2013 Annual Research Report

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Published: 2013-05-31   Modified: 2019-07-29  

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