Relaxation phenomena of charged membranes under pressure gradient.

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  • TASAKA Masayasu
    Department of Industrial Chemistry, Faculty of Engineering, Shinshu University
  • MIYAHARA Nobuhiro
    Department of Industrial Chemistry, Faculty of Engineering, Shinshu University

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Other Title
  • 圧力こう配下における荷電膜の緩和現象
  • アツリョクコウ ハイカ ニ オケル カデン マク ノ カンワ ゲンショウ

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Description

The dependence of streaming potential on time was measured by applying a pressure difference across a glass filter membrane, a cellulose acetate membrane, a collodion-polystyrenesulfonic acid membrane, a collodion-polyacrylic acid membrane, and a collodion-polyacrylic acid partially complexed with Fe (III) -ions membrane. The streaming potential reached immediately a constant value after pressure difference was applied across the membrane, if the membrane was made of substances having stiff structure. However, the absolute value of the streaming potential across the membrane made of soft structure increased slowly with time and a long time was required to reach a steady state. Therefore, the properties of membranes can be characterized by analyzing the dependence of streaming potential on time.

Journal

  • MEMBRANE

    MEMBRANE 14 (1), 71-76, 1989

    THE MEMBRANE SOCIETY OF JAPAN

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