Surface and Interface Analysis · 1987 · 61 citations · 7 references
Natural SciencesMaterials EngineeringMaterials SciencePolymer ChemistryPolymer MaterialsSurface ScienceCoatingsContact Lens MaterialsPlasma Surface TreatmentPlasma-surface InteractionsPolymer SurfacesSurface ModificationContact Angle MeasurementsContact Lens Surface ModificationPlasma Treatment Of PolymersPlasma-assisted BondingPlasma-induced Surface DamagePolymer Surface ModificationSurface LayersSurface Topography Modification
Abstract XPS and contact angle measurements have been used to investigate the surface modification of an alkyl‐acrylate/polysiloxane co‐polymer by plasma‐discharge treatments. The improved wettability brought about by the plasma treatments is shown to result from the oxygenation of the surface layers and the conversion of the polysiloxane component to a silica‐like phase. By analysis with MgKα, AlKα, and AgLα induced XPS this oxygenation is shown to decrease with depth. The total thickness of this altered zone has been estimated by comparing these results with data from argon ion bombardment studies.
7