多孔質高分子膜の気体透過性　Ｖ　　気体透過性を利用した酢酸セルロース多孔膜のキャラクタリゼーション法の適用限界

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タイトル別名
  • Applicability of Pore Characterization by Gas Permeability for Porous Cellulose-Acetate Membrane
  • キタイ トウカセイ オ リヨウシタ サクサン セルロース タコウ マク ノ キ

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説明

The applicability of the pore characterization by gas permeability (GP) was examined for celluloseacetate membranes prepared by micro-phase separation. The mean pore radii obtained from GP were compared with those by scanning electron microscopy (SEM) and filtration rate method.<BR>For 4th mean radius r4>19 nm, GP is applicable to estimate ri (i=3 or 4) values, which agree with those obtained by SEM, but for r4<0.3 nm, GP gives erroneous results. Pore size distribution obtained from GP does not agree with that by SEM. The relation between the porosity obtained from the apparent density and that by SEM satisfies an equation derived theoretically for a spherical pore model. Since porosity value depends on the measuring method, r3 and (r3·r4) 1/2 obtained from GP varies with the porosity value.

収録刊行物

  • 高分子論文集

    高分子論文集 37 (6), 405-412, 1980

    公益社団法人 高分子学会

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