Surface modification of polyethylene terephthalate (PET) and oxide coated PET for adhesion improvement

The lifetime of diverse material multilayer-systems (oxide/organic) is mainly determined by the adhesion between its layers. In this work, different surface modification techniques and their impact on wetting behavior and adhesion were tested. For this purpose contact angle, X-Ray photoelectron spectroscopy (XPS) and pull-off measurements were performed. For further proof of the suitability for high barrier multilayer systems UV-VIS and permeation barrier measurements were accomplished.