Plasma Surface Modification of Biocompatible Polymers Using Atmospheric Pressure Dielectric Barrier Discharge

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Authors

HERGELOVÁ Beáta HOMOLA Tomáš ZAHORANOVÁ Anna PLECENIK Tomáš KOVÁČIK Dušan MATOUŠEK Jindřich

Year of publication 2012
Type Article in Proceedings
Conference WDS 2012 - Proceedings of Contributed Papers
MU Faculty or unit

Faculty of Science

Citation
Web http://www.mff.cuni.cz/veda/konference/wds/proc/proc-contents.php?year=2012
Field Plasma physics
Keywords Plasma; Surface Modification; Polymers; PTFE; PMMA
Description In this contribution the results of the atmospheric pressure non-thermal plasma treatment of biocompatible polymer surfaces (PMMA, PTFE) are presented. The aim of the work was to activate surface of polymers and to create polar function groups, which result in surface adhesion and free surface energy increase. The optimal plasma treatment conditions like treatment time, discharge input power, sample distance from the electrode surface and working gas were investigated. Physical analyses (contact angle measurement, AFM) and chemical analyses (XPS) before and after treatment were made. Treatment time less than 10 s was sufficient to obtain essential decrease of water contact angles (increase of hydrophilicity) on polymer surfaces (3 s by PMMA, 7–10 s by PTFE). Monitoring of ageing effect demonstrated, that surface hydrophilization seems to be permanent. AFM measurements showed that such treatment do not destroy the polymer surfaces. Higher number of polar functional groups containing oxygen (C–O, O–C=O) was created on the polymer surfaces.
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