TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Mrsic, Ivana A1 - Bäuerle, Tim A1 - Ulitzsch, Steffen A1 - Lorenz, Günter A1 - Rebner, Karsten A1 - Kandelbauer, Andreas A1 - Chassé, Thomas T1 - Oxygen plasma surface treatment of polymer films—Pellethane 55DE and EPR-g-VTMS JF - Applied surface science : a journal devoted to applied physics and chemistry of surfaces and interfaces N2 - A systematic study using a central composite design of experiments (DoE) was performed on the oxygen plasma surface modifications of two different polymers—Pellethane 2363-55DE, which is a polyurethane, and vinyltrimethoxysilane-grafted ethylene-propylene (EPR-g-VTMS), a cross-linked ethylene-propylene rubber. The impacts of four parameters—gas pressure, generator power, treatment duration, and process temperature—were assessed, with static contact angles and calculated surface free energies (SFEs) as the main responses in the DoE. The plasma effects on the surface roughness and chemistry were determined using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Through the sufficiently accurate DoE model evaluation, oxygen gas pressure was established as the most impactful factor, with the surface energy and polarity rising with falling oxygen pressure. Both polymers, though different in composition, exhibited similar modification trends in surface energy rise in the studied system. The SEM images showed a rougher surface topography after low pressure plasma treatments. XPS and subsequent multivariate data analysis of the spectra established that higher oxidized species were formed with plasma treatments at low oxygen pressures of 0.2 mbar. KW - plasma surface modification KW - design of experiments KW - XPS KW - surface energy KW - polyurethane KW - EPR-g-VTMS Y1 - 2021 SN - 0169-4332 SS - 0169-4332 U6 - https://doi.org/10.1016/j.apsusc.2020.147782 DO - https://doi.org/10.1016/j.apsusc.2020.147782 VL - 536 SP - 1 EP - 11 S1 - 11 PB - Elsevier CY - Amsterdam ER -