Authors König, U. ; Nitschke, M. ; Pilz, M. ; Simon, ; Arnhold, Ch. ; Werner, C.
Title Stability and Ageing of Plasma Treated Poly(tetrafluoroethylene) Surfaces
Date 07.06.2002
Number 9814
Abstract In this study CO<sub>2</sub>, H<sub>2</sub>/H<sub>2</sub>O and H<sub>2</sub>O low pressure plasma treatment of poly(tetrafluoroethylene) (PTFE) foils and of thin plasma deposited fluorocarbon polymer (PDFP) films with a structure close to PTFE was investigated. The properties of the plasma were analyzed by mass spectroscopy (MS) and optical emission spectroscopy (OES). The modified fluorocarbon surfaces were characterized by X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), fourier transform infrared (FTIR) spectroscopy, spectroscopic ellipsometry, electrokinetic measurements and dynamic contact angle measurements in order to find optimized treatment conditions. The results of the surface modification were compared with respect to the efficiency of the plasma treatment and the stability of the modification effect at different ambient conditions. It was shown that the H<sub>2</sub>O plasma treatment is the most effective process for the intended modification. The hydrophobic PTFE surface was converted into a more hydrophilic one. The introduced radicals after the H<sub>2</sub>O plasma treatment can be utilized subsequently for post plasma reactions such as grafting processes.
Publisher Colloids and Surfaces B: Biointerfaces
Citation Colloids and Surfaces B: Biointerfaces 25 (2002) 313-324
Tags MBC_Plasma

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