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Line 5: === Polytetrafluoroethylene (Teflon) === ~~[[File:PTFE3.pdf\|thumb\|Polytetrafluoroethylene (PTFE) is a thermoplastic that is used for its non-wetting properties and low friction.]]~~ [[polytetrafluoroethylene\|Teflon]] is a hydrophobic polymer composed of a carbon chain saturated with fluorine atoms. The fluorine-carbon bond is largely ionic producing a strong dipole. The dipole prevents Teflon from being susceptible to Van der Waals forces, so other materials will not stick to the surface.<ref name=teflon>{{cite web \|url=http://www.sigmaaldrich.com/technical-documents/articles/material-matters/fluorinated-hyperbranched.html \|title= Fluorinated Hyperbranched Polymers \|last1= Mueller \|first1= Anja \|year= 2006 \|work= Sigma Aldrich \|accessdate=19 May 2013}}</ref> Teflon is commonly used to reduce friction in biomaterial applications such as in arterial grafts, catheters, and guide wire coatings.

Biomaterial surface modifications: Difference between revisions