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Nafion is a sulfonated tetrafluoroethylene based fluoropolymer-copolymer discovered in the late 1960s by Walther Grot of DuPont. It is the first of a class of synthetic polymers with ionic properties which are called ionomers.his form of Nafion, referred to as the neutral or salt form, is finally converted to the acid form containing the sulfonic acid (-SO 3 H) groups. Nafion can be cast into thin films by heating in aqueous alcohol at 250 Â°C in an autoclave.
These unusual properties are exploited in the four main applications of Nafion today. 1  Nafion is used to fabricate ion-exchange membranes used to produce chlorine gas and lye (sodium hydroxide) by the electrolysis of salt water.afion is a super-acid catalyst. The sulfonic acid groups attached to the Teflon backbone within Nafion function as an extremely strong proton donor due to the stabilizing effect of the large polymer matrix attached to the sulfonic acid.