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Surface Composition Change of UV/Ozone Modified Polypropylene  

Kim, J.I. (College of Environment and Applied Chemistry Kyung Hee University)
Ryu, S.H. (College of Environment and Applied Chemistry Kyung Hee University)
Publication Information
Elastomers and Composites / v.37, no.1, 2002 , pp. 49-56 More about this Journal
Abstract
Polypropylene is oxidized with UV/ozone as a function of UV treatment time and ozone flow rate and its surface characteristics are investigated using contart angle measurements and XPS. The aging behavior of oxidized surface is investigated under air, water and ethylene glycol as the aging media. Adhesion strength is also investigated using a lap shear test. Polar surface energy increases with increasing UV/ozone treatment time as well as ozone flow rate. No polar surface energy change is observed under water aging, while under air aging it decreases significantly within 2-3 days and reaches the close value as that of the untreated PP. Adhesion strength increases with increasing UV/ozone treatment time as well as ozone flow rate.
Keywords
Polypropylene; UV/Ozone treatment; Aging; Adhesion Strength; Contact Angle; X-ray Photoelectron Spectroscopy;
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