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Tetrafluoroethylene-Perfluorovinylsulfonicacid-Fluorocopolymer (TFE/PVS)


Tetrafluoroethylene-Perfluorovinylsulfonicacid-Fluorocopolymer (TFE/PVS)Description:

TFE/PVS is modified PTFE and was produced first-time by DuPont. It is a thermoplastic fluoropolymer, which consists of tetrafluoroethylene (TFE) and perfluorovinylsulfonicacid. TFE/PVS was the first thermoplastic fluorocopolymer with ionic properties, which arise from the present sulfonicacid-moiety. Together with other polymers showing ionic properties it was registered in the new polymer class, the ionomers. The properties of TFE/PVS result from the combination between the physical and chemical properties of PTFE and the characteristic properties of ions. TFE/PVS is exceedingly resistant to chemicals and is attacked only by metallic sodium. The copolymer is also applicable in high temperature domains (190°C). In contrast to common PTFE, TFE/PVS is highly ion conducting, wherefore it is employed as cation exchanging membrane. TFE/PVS has a high permeability for water.
See also Nafion


Usage:

  • as ion exchanging membrane (NaOH production by electrolysis of NaCl-solution)
  • desiccation of gases
  • as proton exchanging membrane in fuel cells
  • as acid catalyst in the chemical synthesis

Formula:

Tetrafluoroethylene-Perfluorovinylsulfonicacid Fluorocopolymer (TFE/PVS)

Category:
Thermoplastic
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