Modification of polyethylene terephthalate (PET) films surface with gradient roughness and homogenous surface chemistry by dielectric barrier discharge plasma

摘要

Graphical abstractDisplay OmittedHighlights?Non-uniform plasma was used to modify PET films.?The treated film surface can be divided into typical three regions.?In these regions, gradient roughness surface was created.?Homogenous surface chemistry was also generated in these regions.?The experimental results were explained by theoretical plasma-etching mechanism.AbstractDielectric barrier discharge (DBD) plasma was used to modify polyethylene terephthalate (PET) films with gradient roughness and homogenous s