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A novel ionic liquid of trifluoroacetic propylamine, i.e., [CH 3 CH 2 CH 2 NH 3+ ] [CF 3 COO − ] (TFAPA), was synthesized from trifluoroacetic acid and propylamine. The ionic liquid of TFAPA was used to prepare anhydrous, conducting membranes based on polymers of sulfonated poly (ether ether) ketone (SPEEK) or polyvinylidenefluoride (PVDF). The...
The acid doping behavior of poly(2,2′-(m-phenylene)-5,5′-bibenzimidazole) (PBI) membranes in aqueous phosphoric acid was studied at room temperature. It was found that doping phosphoric acid in the membrane obeyed a multimolecular layer absorption mechanism proposed in this work. Equation, i.e., 1/[LT]B=(1 − C0/17.5)/2.1, was presented to describe the relationship of the acid doping level of...
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