Surface modification of Teflon® PFA with vacuum UV photo-oxidation
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TextSeries: ; Journal of Adhesion Science and technology, 20(5), p.437-455, 2006Contained works: - Dasilva, W
- Entenberg, A
- Kahn, B
- Debies, T
- Takacs, G. A
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Surface modification of poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether)(PFA)with vacuum UV (VUV)photo-oxidation using radiation from excited Ar atoms downstream from an Ar microwave (MW)plasma shows: (1)an improvement in wettability as observed by water contactangle measurements; (2)surface roughening; (3)incorporation of oxygen as C=O, CF-O-CF2 and CF2-O-CF2 moieties and (4)enhancement of the CF-O-C n F2n+1 concentration. Adhesion measurements of Cu sputter coated onto the photo-oxidized PFA surface results in failure within the PFA (cohesive failure)and not at the Cu-PFA interface.
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