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- Title
Cation-exchange membranes: Comparison of homopolymer, block copolymer, and heterogeneous membranes.
- Authors
Schauer, Jan; Llanos, Javier; Žitka, Jan; Hnát, Jaromír; Bouzek, Karel
- Abstract
Three types of sulfonic cation-exchange membranes were compared: (a) homogenous membranes prepared by sulfonation of poly(2,6-dimethyl-1,4-phenylene oxide) or poly[oxy(1,4-phenylene)oxy(1,4-phenylene)carbonyl(1,4-phenylene)] and solution casting of the sulfonated products, (b) membranes prepared by sulfonation of poly [styrene- block-(ethene- stat-butene)- block-styrene] film, and (c) heterogeneous membranes prepared by melt-blending linear polyethylene and particles 10-25 μm particles of sulfonated cation-exchanger followed by compression molding. At the same ion-exchange capacity (IEC), the membranes based on the block copolymer showed considerably higher ionic conductivity than the homogeneous membranes. Though having a higher IEC, the heterogeneous membranes were less conductive than the other investigated membranes. Their advantage consists in the ease of preparation and superior resistance to oxidative environment. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
- Subjects
BENZENE; POLYMERS; STYRENE; HYDROCARBONS; POLYETHYLENE; THERMOPLASTICS; BLOCK copolymers
- Publication
Journal of Applied Polymer Science, 2012, Vol 124, pE66
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.35524