Abstract
From the viewpoint that chemical composition at the film surface is different from that in the film bulk even if the same polymers are used, plasma surface modification of poly (oxybenzoate-co-oxynaphthoate) (the trade name is Vecstar) has been investigated. What chain end groups are present at the face of the Vecstar films, how much concentration of the chain end groups locates at the face, and how chain end groups contribute to plasma modification have been discussed. A combination of the EB irradiation or supercritical CO2 modification and plasma modification made the impossible possible in adhesion between Vecstar OC film and copper metal. This improved adhesion may be due to contribution of end groups formed newly by the EB irradiation or supercritical CO2 modification.
