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Application of polymer electrobfte membrane for hydrogen fuel cell is frequentlv not suitable forDMF C. Therefore, many researches are developing new materials. In order to select for DMFCapplications, it is needed to make initial prediction by conducting analysis such as water and methanolswelling, ion exchange capacity, ionic conductivity and methanol permeability. Polysulfone (PSJQ andPolyether-ether ketone (PEEK) are interesting aromatics polymers which are mechanically and thermallystabile. To form electrolyte polymer, sulfonic acid group should be added to PEEK by sulfonation withconcentrate sulfuric acid The objective of blending sulfonated polyether-ether ketone (SPEEK) with PSfis to decrease methanol permeability. The morphology of surface membrane (cross-section) was studiedby SEM analysis. Experiment results showed that blending of PSf and SPEEK produced a non porousmembrane. Adding 10% of PS_f produced the best membrane with ion exchange capacity of 1.9 mea/gpolymer, ionic conductivity 0.00l7 S/cm and methanol permeability 6.4xlG"? cm?/s, water swelling l8%and methanol swelling 17%. |
