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Monitoring the Stability of an Emulsion by High-Frequency Spectroscopy

Research Project

Project/Area Number 14540564
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 分離・精製・検出法
Research InstitutionKanagawa University

Principal Investigator

SUGITANI Yoshinori  Kanagawa Univ., Chem. Dep., Professor, 理学部・化学科, 教授 (80015552)

Co-Investigator(Kenkyū-buntansha) KAGESHIMA K  Utena Corp., Res. Institute, Chief Researcher, 八王子研究所, 主任研究員
NISHIMOTO Y  Kanagawa Univ., Chem. Dep., Assist. Professor, 理学部, 専任講師 (70241114)
AMANO C  Kanagawa Univ., Chem. Dep., Professor, 理学部, 教授 (20017445)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2003: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2002: ¥1,600,000 (Direct Cost: ¥1,600,000)
Keywordsemulsion / high-frequency spectroscopy / stability / frequency shift / permittivity / 高周波分光 / emulsion / stability evaluation / high frequency spectra / oil-in-water
Research Abstract

High-Frequency spectroscopy has been applied to monitoring the stability of oil-in-water emulsions. Emulsion is a kind of colloidal suspension composed of a liquid dispersed throughout another liquid, like oil droplets in water. It was found that stable emulsions showed absorption peaks at around 550 MHz ; further, they shifted from lower to higher frequencies with time. The amount of shift from lower to higher frequencies increased with the stored time. The rate of increase of the frequencies was dependent on the amount of emulsifier added. These results show that the stability of emulsions can be monitored by the amount of the frequency shift.
The reason why the absorption peak shifted to a higher frequency region is considered to be because the relative ratio of oil to water increased in the upper layer of the emulsion sample, where the electrode of detecting resonance was dipped.

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 杉谷 嘉則: "高周波分光法を用いるD-グルコースの異性化反応の追跡"分析化学. 51・9. 735-739 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Yoshinori Sugitani: "Monitoring the Stability of an Emulsion by High-Frequency Spectroscopy"ANALYTICAL SCIENCES. MAY・19. 757-759 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Yuko Nishimoto: "Detection of water-polar solvent interaction using melting of a eutectic"Thermochimica acta. 399. 139-144 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Yoshinori Sugitani: "High-frequency spectroscopic study on the isomerization of a D-glucose aqueous solution"BUNSEKI. Vol.51, No.9. 735-739 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Yoshinori Sugitani: "Monitoring the Stability of an Emulsion by High-Frequency Spectroscopy"ANALYTICAL SCIENCE. Vol.19. 757-759 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Yuko Nishimoto: "Detection of water-polar solvent interaction using melting of eutectic"Thermochimica acta. 399. 139-144 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 杉谷嘉則: "高周波分光法を用いるD-グルコースの異性化反応の追跡"分析化学. 51・9. 735-739 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] Yoshinori Sugitani: "Monitoring the Stability of an Emulsion by High-Frequency Spectroscopy"ANALYTICAL SCIENCES. MAY・19. 757-759 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 杉山, 武井, 立花佳代, 杉谷: "高周波分光法を用いるD-グルコースの異性化反応の追跡"分析化学. 51・9. 735-739 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Takei, Kuroeaki, Nishimoto, Sugitani: "Behavior of Bound Water in Polyethylene Oxide Studied by DSC and High-Frequency Spectroscopy"ANALYTICAL SCIENCES. 18・6. 601-604 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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