Cation-exchange membranes: comparison of homopolymer, block copolymer, and heterogeneous membranes

0376126 - ÚMCH 2013 RIV US eng J - Článek v odborném periodiku
Schauer, Jan - Llanos, J. - Žitka, Jan - Hnát, J. - Bouzek, K.
Cation-exchange membranes: comparison of homopolymer, block copolymer, and heterogeneous membranes.
Journal of Applied Polymer Science. Roč. 124, SI 1 (2012), E66-E72. ISSN 0021-8995. E-ISSN 1097-4628
Grant CEP: GA MŠMT(CZ) 7E08005
GRANT EU: European Commission(XE) 212903 - WELTEMP
Výzkumný záměr: CEZ:AV0Z40500505
Klíčová slova: cation-exchange membranes * poly(phenylene oxide) * poly(ether ketones)
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 1.395, rok: 2012

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.
Trvalý link: http://hdl.handle.net/11104/0006943