ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Influence of photoinitiator and curing conditions on polymerization kinetics and gloss of UV-cured coatings

V. Jančovičová, J. Kindernay, Z. Jakubíková, and I. Mrlláková

Institute of Polymer Materials, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, SK-812 37 Bratislava 1, Slovak Republic

E-mail: viera.jancovicova@stuba.sk

Received: 5 December 2006  Revised: 10 May 2007  Accepted: 18 May 2007

Abstract: Polymerization kinetics and gloss of different formulations of coatings at different UV curing conditions were studied. The results showed that the photoinitiator type, its concentration, sample coating thickness, as well as the UV light intensity were the most significant factors affecting the polymerization course and the gloss of UV-cured films. The increasing concentration of the photoinitiator and the UV light intensity significantly decreased the gloss of the cured surface. The influence of the sample coating thickness on the kinetics and final gloss was also considerable.

Keywords: gloss - UV-curing - IR spectroscopy - layer thickness - UV-light intensity

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-007-0052-1

Chemical Papers 61 (5) 383–390 (2007)