Surface modification of polycarbonate (bisphenol A) by low pressure rf plasma

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Authors

SUBEDI Deepak Prasad ZAJÍČKOVÁ Lenka BURŠÍKOVÁ Vilma JANČA Jan

Year of publication 2003
Type Article in Periodical
Magazine / Source Himalayan Journal of Sciences
MU Faculty or unit

Faculty of Science

Citation
Field Plasma physics
Keywords Polycarbonate; surface modification; rf plasma; ageing; surface energy
Description Effects of low pressure radio frequency (rf) plasma treatment on the surface properties of polycarbonate are presented in this paper. Results obtained from the surface energy measurement after different conditions of treatment are compared. After treatment the surface free energy increased from the original value of 35 mJ/m2 to 63-74 mJ/m2. X-ray photoelectron spectroscopy measurements showed an increase in oxygen to carbon ratio after the treatment indicating an increase of oxygen-containing functional groups on the polycarbonate surface. A study of the stability of the modified surface property has been made on the basis of surface free energy. To study the improvement of adhesion between the polycarbonate and thin coatings, organosilicon thin films were deposited on the untreated and plasma treated polycarbonate. The adhesion of film to substrate was quantitatively analysed by cross-hatch peel test.
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