Photoinitiation mechanism of free radical photopolymerization in the presence of cyclic acetals and related compounds |
| |
| Authors: | P. Xiao J. Lalevée X. Allonas J.P. Fouassier C. Ley M. El‐Roz S. Q. Shi J. Nie |
| |
| Affiliation: | 1. Department of Photochemistry, UMR CNRS 7525, University of Haute Alsace, ENSCMu, 3 rue Alfred Werner, Mulhouse 68093, France;2. Department of Chemistry, Northwest University, Xi'an 710069, People's Republic of China;3. State Key Laboratory of Chemical Resource Engineering and Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China |
| |
| Abstract: | The behavior of six cyclic acetals and related compounds in the photoinitiation step of a radical photopolymerization was investigated. As shown by the photopolymerization kinetic data obtained from FTIR spectroscopy, most of them are efficient coinitiators in the presence of benzophenone (BP) with efficiencies close to a reference amine coinitiator (ethyl dimethylaminobenzoate, EDB). Laser flash photolysis and ESR spin trapping technique were used to study the photochemical mechanisms of the production of initiating radicals and explain the differences in reactivity. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010 |
| |
| Keywords: | biocompatibility photochemistry photopolymerization radical polymerization |
|
|
