Description:
Nafion is a copolymer of tetrafluoroethylene (Teflon) and perfluoro-3,6-dioxa-4-methyl-7-octene-sulfonic acid. Like Teflon, Nafion is highly resistant to chemical attack, but the presence of its exposed sulfonic acid groups confers unusual properties. Sulfonic acid has a very high water-of-hydration, absorbing 13 molecules of water for every sulfonic acid group in the polymer. Consequently, Nafion absorbs 22% by weight of water.
Usage:
- as membrane:
- chlorine alkali elektrolysis
- fuel cells
- as membrane/tube: gas drying
- as pellets: acid catalyst for organic synthesis
- in solution: raw material for polymer synthesis
Formula:
Category:
Ionomer