Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4898134
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Funding
- European Regional Development Fund [CZ 1.05/2.1.00/03.0086]
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We present an atmospheric pressure ambient air plasma technique developed for technically simple treatment of inner and/or outer surfaces of plastic tubes and other hollow dielectric bodies. It is based on surface dielectric barrier discharge generating visually diffuse plasma layers along the treated dielectric surfaces using water-solution electrodes. The observed visual uniformity and measured plasma rotational and vibrational temperatures of 333K and 2350K indicate that the discharge can be readily applied to material surface treatment without significant thermal effect. This is exemplified by the obtained permanent surface hydrophilization of polytetrafluoroethylene tubes related to the replacement of a high fraction (more than 80%) of the surface fluorine determined by X-ray photoelectron spectroscopy. A tentative explanation of the discharge mechanism based on high-speed camera observations and the discharge current and voltage of measurements is outlined. (C) 2014 AIP Publishing LLC.
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