Effect of Surface Free Energies on the Detergency Phenomena of Particulate Soils

DOI

Bibliographic Information

Other Title
  • 固体粒子汚れの洗浄性に及ぼす表面自由エネルギーの影響

Abstract

The detergency of particulate soil in aqueous solutions was examined by the quartz crystal microbalance (QCM) technique and was discussed on the basis of the surface free energies. The gold electrode and spin-coated film of polyethylene, nylon 6 and cellulose triacetate on the gold electrode of the QCM were used as substrates. As model particulate soils, polyethylene and nylon 12 particles were used. The QCM was perpendicularly immersed in aqueous dispersions of spherical particles to deposit the particles onto the substrate. After pulling the substrates out of the dispersion and drying in air, the substrates were cleaned in aqueous solutions with and without ethanol. The removal efficiency was calculated from the frequency changes of the QCM due to soil deposition and cleaning. The efficiency was dependent on the particles and substrates, and increased by the addition of ethanol in all system. The Lifshitz-van der Waals and acid-base components of the surface freed energy of the soil and substrate were estimated from the contact angles of three probe liquids. The detergency phenomenon in the present system was explained in terms of the free energy change due to soil removal, which was calculated from the surface free energy components.

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Keywords

Details 詳細情報について

  • CRID
    1390282679184674176
  • NII Article ID
    130003819949
  • DOI
    10.11419/senshoshi1960.48.389
  • ISSN
    18846599
    00372072
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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