Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 300, Issue 2, Pages 640-647Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2006.04.001
Keywords
atmospheric pressure plasma with liquid electrolyte cathode; polymers; surface composition; modification; polyethylene
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This study investigated the action of an atmospheric pressure air glow discharge (APGD) with aqueous electrolyte cathode onto the surface of polyethylene (PE) films. Distilled water and aqueous solutions of KCl and HCl were utilized as a cathode. The surface properties of PE were characterized by contact angle measurement followed by surface free energy calculation, Fourier transform infrared by attenuated total reflectance (FTIR-ATR), and XPS. After treating the PE surface, we observed OH groups, C=O groups in ester, ketone, and carboxyl groups, and C=O groups in unsaturated ketones and aldehydes. For a treatment time of 20 min and a discharge current of 40 mA, atomic concentrations of O and N were 12% and 2%, respectively, under distilled water application. Modification processes were able to improve the surface free energy of PE. (c) 2006 Elsevier Inc. All rights reserved.
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