Wetting Behavior of Oxygen Plasma Treated PTFE
PTFE was treated with oxygen plasma and the effects of treatment time were evaluated by XPS, SSIMS and contact angle measurements. The behavior of water and CH2I2 advancing and receding angles was interpreted on the basis of current theories on contact angle hysteresis. At short treatment time wettability reflects chemical modification of the surface, while at longer treatment times surfaces are deeply etched and contact angles are controlled by roughness. The typical behavior of composite surfaces was observed when using water as the wetting liquid.
KeywordsContact Angle Contact Angle Measurement Oxygen Plasma Composite Surface Contact Angle Hysteresis
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