Abstract
A series of cross-linkable sulfonated poly(arylene ether nitrile)s (SPEN) membranes with different ratios of sulfonated poly(vinyl alcohol) (SPVA) have been prepared through thermal heating. This experiment had two advantages: expectant low methanol permeability and swelling ratio obtained after being cross-linked. Besides, the cross-linked membranes also exhibited excellent thermal stability than that of pure SPEN. Low swelling ratio and water uptake membranes had been obtained after being cross-linked. The methanol permeability showed a minimum value of 8.08 × 10−8 cm2 s−1 of SPEN-SPVA-40%, and the membrane also showed higher selectivity than Nafion 117. The result suggested that the SPEN-SPVA membranes are potential candidates as PEM in DMFCs.
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