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Water-ethanol separation by pervaporation through plasma graft polymerized membranes

✍ Scribed by Toshihiro Hirotsu

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
719 KB
Volume
34
Category
Article
ISSN
0021-8995

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✦ Synopsis

Water-ethanol permselective membranes were prepared through plasma graft polymerization of acrylic acid, methacrylic acid, and acrylamide onto porous polypropylene film. In these membranes, the functions of permseparation and mechanical properties are shared respectively to the graft polymer layer and the substrate f i l m . Higher permselectivity of water is achieved with the ionization of the acrylic acid and the methacrylic acid-grafted membranes. Permselectivity is dependent on the degree of grafting, and it is necessary to fill the pores of substrate film with graft polymers. Permseparation of water was investigated with respect to the feed ethanol concentration and also to the temperature dependence.

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