Surface Modification of Polycarbonate by Treatment with 50Hz Dielectric Barrier Discharge at Near Atmospheric Pressure

The samples of Poly-Carbonate (PC) were treated with Dielectric Barrier Discharge produced at 1000V at a near atmospheric pressure. The discharge thus produced was of glow type. Nature of the discharge was studied by using electrical characterization techniques and the electron density of discharge was calculated. Surface characterization of the sample was done using contact angle measurement and Raman spectroscopic analysis. The hydrophilicity of the sample increased rapidly for a certain treatment time and reached to its saturation point. The surface of the treated and untreated samples was found to be Raman active for the shorter treatment time and the activity vanished after further treatment.