Journal
PLASMA PROCESSES AND POLYMERS
Volume 3, Issue 6-7, Pages 506-515Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.200600012
Keywords
atmospheric pressure glow discharges (APGD); biomaterials; dielectric barrier discharges (DBD); ESCA/XPS; functionalization of polymers; poly(tetrafluoroethylene) (PTFE); radio frequency glow discharges (RFGD)
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PTFE surface modifications have been realized using low-pressure RFGD, DBD and APGD in different atmospheres. Compared to the RFGD NH3 plasma, the DBDs operating in H-2/N-2 lead to similar surface concentrations of amino groups and similar surface damage, but with a much higher specificity. Both APGDs in H-2/N-2 and NH3/N-2 lead to lower concentrations of amino groups, but with similar specificity, and with lower surface damage than the RFGD treatment. A method is proposed to evaluate the efficiency of the different discharges for amine surface functionalization of PTFE, and it is concluded that the NH3/N-2 APGD discharge is the one that give the best results for an effective surface treatment.
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