Surface Properties of Polycarbonate Flat sheets after Corona Discharge Treatment

Surface of polycarbonate flat sheets were treated by corona discharge differing in corona treatment time and nozzle-to-sample distance. The modified surfaces were characterized by infrared spectroscopy (ATR-FTTR), atomic force microscopy (AFM) and contact angle measurement. Appearance of polar, oxide functional groups (C=O, C-O) was evident in FTIR spectra and a dramatic change in surface morphology was revealed by AFM in the corona treated surfaces. Root- mean- squared roughness values were increased after corona treatment of all specimens so contact angle of water droplets decreased from 91.7±0.1, for untreated samples to 21.2±0.2 after 25 min corona treatment

کلیدواژه ها:

Polycarbonate ، Surface treatment ، Corona discharge ، Polar functional groups ، Roughness