... MembranesN-117perfluorosulfonic acid polymerDescriptionDupont Nafion PFSA membranes are non-reinforced films based on Nafion PFS Apolymer, a perfluorosulfonic ... /PTFE copolymer in the acid (H+) form. Nafion PFSA membranes are widely used for Proton Exchange Membrane ... polymer is chemically resistant and durable. Properties of Nafion PFSA Membrane Membrane TypeTypical Thickness (microns)Basis Weight ...