PTFE treatment by remote atmospheric Ar/O2 plasmas: a simple reaction scheme model proposal

5th International Workshop & Summer School on Plasma Physics 2012

Carbone, E.A.D.^1 ; Verhoeven, M.W.G.M.^2 ; Keuning, W.^3 ; Van Der Mullen, J.J.A.M.^1

Elementary Processes in Gas Discharges (EPG), Department of Applied Physics, Eindhoven University of Technology (TUe), Eindhoven, Netherlands^1

Physical Chemistry of Surfaces, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology (TUe), Eindhoven, Netherlands^2

Plasma and Materials Processing Group, Dept. of Applied Physics, Eindhoven University of Technology (TUe), Eindhoven, Netherlands^3

关键词: Atmospheric pressure microwave plasma torch;    Polytetrafluoroethylene (PTFE);    PTFE treatments;    Pure-argon plasmas;    Reference samples;    Simple reaction;    Water contact angle (WCA);   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/715/1/012011/pdf
DOI  :  10.1088/1742-6596/715/1/012011

来源: IOP

【 摘 要 】

Polytetrafluoroethylene (PTFE) samples were treated by a remote atmospheric pressure microwave plasma torch and analyzed by water contact angle (WCA) and X-ray photoelectron spectroscopy (XPS). In the case of pure argon plasma a decrease of WCA is observed meanwhile an increase of hydrophobicity was observed when some oxygen was added to the discharge. The WCA results are correlated to XPS of reference samples and the change of WCA are attributed to changes in roughness of the samples. A simple kinetics scheme for the chemistry on the PTFE surface is proposed to explain the results.