Development and characterization of crosslinked ionomer membranes based upon sulfinated and sulfonated PSU crosslinked PSU blend membranes by disproportionation of sulfinic acid groups

摘要: Abstract Crosslinked sulfonated ion-exchange blend membranes have been produced via a new crosslinking process. The blends obtained from mixing PSU-SO3H and PSU-SO2H in different sulfinic acid/sulfonic acid relations N-methyl pyrrolidone. process consists of the disproportionation between SO2H groups which occurs during membrane formation. These characterized terms capacity, ion-resistance, swelling, ion-permeability, ion-permselectivity. Some applied to electro-membrane processes, as electrodialysis, PEM fuel cells (PEM=polymer electrolyte membrane). advantages sulfinate are: (i) is easy do; (ii) capacities crosslinked thus their ionic resistance, swelling permselectivity can be varied broad range. show good thermal stabilities are suitable for application electrodialysis. Although property profile still has improved further, it demonstrated that they principle cells.