Journal of Applied Polymer Science · 1999 · 74 citations · 5 references
Natural SciencesMaterials EngineeringMaterials SciencePhysical ChemistrySurface ChemistrySurface ScienceCoatingsPlasma-surface InteractionsPolymer Thin FilmsSurface CoatingsSurface ModificationSurface PhysicsPlasma TreatmentPlasma-treated Surface WettabilityPolyethylene TerephthalatePolymer Surface ChemistrySurface Functional GroupsSurface WettabilitySurface Wettability ControlSurface Wettability Effects
The surface of poly(ethylene terephthalate) (PET) film was modified by low-temperature plasma with O2, N2, He, Ar, H2, and CH4 gases, respectively. After being treated by low-temperature plasma, their surface wettability and chemical composition were investigated by means of electron spectroscopy for chemical analysis (ESCA) and contact angle measurement. The result shows that the surface wettability of PET can be improved by low-temperature plasma, and the effect of the modification is due mainly to the kind of the gases. Mainly because of the contribution of hydrogen bonding force γ[STACK]cS[ENDSTACK], the surface wettability of PET treated with O2, N2, He, and Ar plasma for a short time (3 min) increase sharply, and the surface wettability is also improved by H2 plasma treatment; but the CH4 plasma treatment does not improve the wettability of PET. ESCA shows that the effect of wettability of PET is tightly related to the presence of polar functional groups that reside in the outermost surface layer of PET. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 72: 1327–1333, 1999
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Gas plasma effects on polymer surfaces
Carolyn A. L. Westerdahl, J. R. Hall, Eleanor C. Schramm et al. · Journal of Colloid and Interface Science · 1974 · 74 citations