“…In complement to the XPS data the DBD treated copolymer film shows a distinctive increase in the intensities of the Cl À ions, additionally showing a decreasing trend with depth of probing. Elimination of HCl from PVC under UV radiation has been identified previously [21,22]. Hence, it could be argued that elimination of HCl due to the DBD treatment of the PVC copolymer might lead to the detection of more Cl À ions.…”