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Preparation and properties of cationic membranes obtained by radiation grafting of vinyl monomers onto poly(tetrafluoroethylene-perfluoropropylvinyl ether) (PFA) films

✍ Scribed by N. H. Taher; A. M. Dessouki; F. H. Khalil; M. B. El-Arnaouty

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 429 KB
Volume: 41
Category: Article
ISSN: 0959-8103
DOI: 10.1002/(sici)1097-0126(199612)41:4<383::aid-pi622>3.0.co;2-2

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✦ Synopsis

Cationic membranes were prepared by direct radiation grafting of acrylic acid (AAc) and methacrylic acid (MAA) onto poly(tetrafluoroethy1eneperfluoropropylvinyl ether) (PFA) films, followed by alkaline treatment to confer ionic character in the graft copolymer. The addition of inhibitor such as Mohr's salt, FeCl, and CuCI, was used to achieve the complete inhibition of homopolymerization of the monomer. The dependence of the grafting rate on AAc and MAA concentration was found to be of the order of 1-3 and 0-62, respectively. Investigation of the mechanical properties, electrical conductivity, dimensional change and swelling behaviour of the grafted films revealed that such a copolymer could be acceptable in practical use as a cation-exchange membrane.

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