Informace o publikaci

MODIFICATION OF VARIOUS POLYMER SURFACES USING ATMOSPHERIC PRESSURE REDUCING PLASMA

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DOUBKOVÁ Zdeňka TUČEKOVÁ Zlata KELAR Jakub KRUMPOLEC Richard ZEMÁNEK Miroslav

Rok publikování 2019
Druh Článek ve sborníku
Konference NANOCON2018 Conference Proceedings, Peer Reviewed
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://www.nanocon.eu/files/uploads/01/NANOCON2018%20-%20Conference%20Proceedings_content.pdf
Klíčová slova Non-isothermal plasma; reduction atmosphere; PMMA; PET; PTFE
Popis This paper presents the results of surface modification of polymers induced by atmospheric pressure nonisothermal plasma generated in reducing atmosphere. The technology based on diffuse coplanar surface barrier discharge (DCSBD) was used with the aim to achieve highly hydrophobic surfaces. One rigid (polymethylmethacrylate-PMMA) and three flexible polymers (PMMA, polytetrafluoroethylene-PTFE and polyethylene terephthalate-PET) were modified by plasma. The changes in wetting phenomena and surface free energy were observed depending on plasma treatment conditions. The most significant modification occurred on flexible PMMA and PTFE. Using pure hydrogen plasma, we were able to achieve an increase of water contact angle up to ~115° from the original value 78° (untreated PMMA). On the contrary, the water contact angle on PTFE decreased to ~91° from the value 109° (untreated PTFE). Observed etching process on polymer surfaces and the changes in surface roughness were detected by a scanning electron microscopy (SEM) and atomic force microscopy (AFM).
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