https://wikimd.org/index.php?action=history&feed=atom&title=Polytetrafluoroethylene 2026-04-27T04:10:47Z Revision history for this page on the wiki MediaWiki 1.44.2 https://wikimd.org/index.php?title=Polytetrafluoroethylene&diff=1356525&oldid=prev 2019-10-09T14:01:09Z

<p>1 revision imported</p> <p><b>New page</b></p><div>:&#039;&#039;&#039;&#039;&#039;Teflon&#039;&#039;&#039; redirects here, other uses are at [[Teflon (disambiguation)]]&#039;&#039;<br /> [[File:Blintzes in frying pan.jpg|thumb|PTFE is often used to coat non-stick frying pans as it is [[hydrophobic]] and has a fairly high heat resistance.]]<br /> In [[chemistry]], &#039;&#039;&#039;Polytetrafluoroethylene&#039;&#039;&#039; (often shortened to &#039;&#039;&#039;PTFE&#039;&#039;&#039;) is a [[polymer]] of [[tetrafluoroethylene]]. It is a [[fluoropolymer]], because the polymerization is based on strong [[bond (chemistry)|bonds]] of [[fluorine]] and [[carbon]]. Polytetrafluoroethylene is not very reactive. It also repels [[oil]] and [[water]]. [[E. I. du Pont de Nemours and Company]] developed it in 1938. It is better known by its trade-names, &#039;&#039;Teflon&#039;&#039;, and &#039;&#039;&#039;Gore-Tex&#039;&#039;&#039;. Teflon is a coating done to [[frying pan]]s, among others. Gore-Tex is a [[membrane]] used in [[clothing]].<br /> <br /> == Problems ==<br /> [[Perfluorooctanoic acid]] is needed to produce Polytetrafluoroethylene. Perfluorooctanoic acid is because it is very [[toxic]] for people and may cause [[cancer]]. The [[precursor]]s for many [[chemical weapon]]s are highly [[corrosion|corrosive]], their containers are therefore often treated with Polytetrafluoroethylene. For this reason, the export of Polytetrafluoroethylene from the [[European Union]] may need a special [[permit]]. <br /> <br /> {{chem-stub}}<br /> <br /> [[Category:Polymers]]</div>

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