Optimization of Polyethersulfone Surface Properties Using Plasma Treatment Generated by Diffuse Coplanar Surface Barrier Discharge

• Authors: GHOURCHI BEIGI Pedram; ZAHEDI Leila; STUPAVSKÁ Monika; ZAŽÍMAL František; LIČKOVÁ Petra; HOMOLA Tomáš; KOVÁČIK Dušan
• Year of publication: 2026
• Type: Article in Periodical
• Magazine / Source: Plasma Processes and Polymers
• MU Faculty or unit: Faculty of Science
• web: https://doi.org/10.1002%2Fppap.70135
• Doi: https://doi.org/10.1002/ppap.70135
• Keywords: DCSBD; hydrophilicity; LMWOM; polyethersulfone; surface modification
• Description: Surface modification is vital for naturally hydrophobic polymers like Polyethersulfone (PES) to enhance the wettability for specific applications. This study investigates the surface treatment of PES foil using a diffuse coplanar surface barrier discharge (DCSBD) plasma system in oxygen and nitrogen atmospheres. Plasma exposure significantly reduces water contact angle values, achieving saturation within 2?s, thus improving hydrophilicity. X-ray photoelectron spectroscopy indicates increased oxygen-containing functional groups, driving enhanced wettability. Atomic force microscopy and scanning electron microscopy reveal morphological changes, particularly low-molecular-weight oxidized material (LMWOM) formation after extended treatment and surface roughening. UV-visible spectroscopy confirms minimal impact on optical transparency. This research highlights atmospheric-pressure plasma treatment as a rapid, eco-friendly approach for tailoring polymer surface properties.

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