Abstract
Sulfonated poly(oxa-p-phenylene-3,3-phthalido-p-phenylene-oxa-p-phenylene-oxy-phenylene) (PEEK-WC) membranes with various degrees of sulfonation (DS) were prepared, and their electrochemical and thermal properties were studied. Composites were formed by adding the hydrated phosphotungstic acid (PWA). The membrane (DS = 0.96, PWA = 50 %) conductivity was increased to 3.5 x 10-2 S cm-1 at room temperature and 6.0 x 10-2 S cm-1 at 80 °C. The composite membrane with a low amount of PWA embedded, showed lower methanol crossover in comparison to Nafion®. The addition of PWA increased the water retention of the composite membrane.
Conference
IUPAC Workshop on New Directions in Chemistry - Workshop on Nanostructured Advanced Materials (WAM III), Workshop on Advanced Materials, WAM, Advanced Materials, 3rd, Stellenbosch, South Africa, 2005-09-05–2005-09-09
© 2013 Walter de Gruyter GmbH, Berlin/Boston
