Dupont's spin-off Chemours today manufactures PTFE using an alternative chemical it calls GenX, another PFAS. For decades, DuPont used perfluorooctanoic acid (PFOA, or C8) during production of PTFE, later discontinuing its use due to ecotoxicological and health issues that lead to legal actions. Only since the start of the 21st century has the environmental impact and toxicity to human and mammalian life been studied in depth. PTFE is one of the best-known and widely applied PFAS commonly described as persistent organic pollutants or "forever chemicals". It is used as a graft material in surgery and as a coating on catheters. Where used as a lubricant, PTFE reduces friction, wear, and energy consumption of machinery. It is non-reactive, partly because of the strength of carbon–fluorine bonds, so it is often used in containers and pipework for reactive and corrosive chemicals. Polytetrafluoroethylene is used as a non-stick coating for pans and other cookware. PTFE has one of the lowest coefficients of friction of any solid. PTFE is hydrophobic: neither water nor water-containing substances wet PTFE, as fluorocarbons exhibit only small London dispersion forces due to the low electric polarizability of fluorine. Polytetrafluoroethylene is a fluorocarbon solid, as it is a high- molecular-weight polymer consisting wholly of carbon and fluorine.
The commonly known brand name of PTFE-based composition is Teflon by Chemours, a spin-off from DuPont, which originally discovered the compound in 1938. Polytetrafluoroethylene ( PTFE) is a synthetic fluoropolymer of tetrafluoroethylene and is a PFAS that has numerous applications.
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