Abstract
Surface modification of poly(tetrafluoroethylene) (PTFE) films by radio frequency argon plasma treatment as well as by graft copolymerization of the plasma-pretreated films with acrylamide (AAm) has been carried out. XPS results show that mild plasma treatment is sufficient to cause substantial surface defluorination end oxidation. The oxygen functionalities incorporated greatly facilitate subsequent graft copolymerization in the presence of near-UV radiation. Strong plasma treatment, on the contrary, results in considerable cross-linking of polymers on the surface and thus has an adverse effect on the graft copolymerizetion
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