화학공학소재연구정보센터
Journal of Colloid and Interface Science, Vol.271, No.1, 187-191, 2004
Effects of atmospheric plasma treatment on the interfacial characteristics of ethylene-vinyl acetate/polyurethane composites
The surface characteristics of ethylene-vinyl acetate (EVA) were modified by argon, air, and oxygen plasma at atmospheric pressure. The surface energies of the EVA were evaluated by contact angles according to a sessile-drop method and adhesion energy (G(IC)) was estimated by a 180degrees peel test with polyurethane (PU). After the plasma treatments, the surface free energies (or specific polar component) of the EVA increased about five times compared to that of virgin EVA. The adhesion between the EVA and the PU is significantly improved by the plasma treatment. Especially, Ar/air/O-2 plasma treatment increases G(IC) of EVA/PU up to about 600% compared to that of the sample using virgin EVA. (C) 2003 Elsevier Inc. All rights reserved.