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Water‐ethanol separation by pervaporation through plasma graft polymerized membranes
Author(s) -
Hirotsu Toshihiro
Publication year - 1987
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1987.070340324
Subject(s) - pervaporation , membrane , acrylic acid , methacrylic acid , chemical engineering , polymer chemistry , grafting , polymer , materials science , polymerization , acrylamide , polyelectrolyte , ethanol , substrate (aquarium) , maleic acid , chemistry , organic chemistry , composite material , monomer , copolymer , permeation , biochemistry , oceanography , engineering , geology
Abstract 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 film. 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.