Preparation and Desalination Property of Reverse Osmosis Membranes by Surface Acetylation of Cellulose Membranes.

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  • セルロース膜の膜状態での酢化反応による逆浸透膜の調整および脱塩性
  • セルロース マク ノ マク ジョウタイ デ ノ サクカ ハンノウ ニヨル ギャ

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Description

Acetylation of cellulose membrane regenerated from commercial triacetyl cellulose membrane was carried out by soaking the membrane in acetyl anhydride-benzene-sulfuric acid mixture at room temperature. It was suggested that the membrane obtained by this method does not have a layer structure but a rather homogeneous one. As the acetylation reaction proceeded, the water flux decreased and the salt rejection increased. The water flux and salt rejection of these membranes were 1.6×10-5g/cm2·sec and 93%, respectively. These values did not change during the continuous reverse osmosis experiment for 20 hours. The mechanism of permeation of water and salt through these membranes was discussed.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 33 (3), 112-115, 1976

    The Society of Polymer Science, Japan

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