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Photoinitiation study of Irgacure 784 in an epoxy resin photopolymer
Author(s)
Date Issued
2010-03-10
Date Available
2011-11-23T16:42:32Z
Abstract
A deeper understanding of the processes, which occur during free radical photopolymerization, is necessary in order to develop a fully comprehensive model, which represents their behavior during exposure. One of these processes is photoinitiation, whereby a photon is absorbed by a photosensitizer producing free radicals, which can initiate polymerization. These free radicals can also participate in polymer chain termination (primary termination), and it is therefore necessary to understand their generation in order to predict the temporally varying kinetic effects present during holographic grating formation. In this paper, a study of the photoinitiation mechanisms of Irgacure 784 photosensitizer, in an epoxy resin matrix, is presented. We report our experimental results and present a theoretical model to predict the physically observed behavior.
Sponsorship
Science Foundation Ireland
Irish Research Council for Science, Engineering and Technology
Other Sponsorship
Enterprise Ireland
Type of Material
Journal Article
Publisher
American Institute of Physics (AIP)
Journal
Journal of Applied Physics
Volume
107
Issue
5
Start Page
053113-1
End Page
053113-8
Copyright (Published Version)
2010 American Institute of Physics.
Subject – LCSH
Free radical reactions
Photopolymerization
Diffraction gratings
Polymers
Web versions
Language
English
Status of Item
Peer reviewed
ISSN
0021-8979 (print)
1089-7550 (online)
This item is made available under a Creative Commons License
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Photoinitiation study of Irgacure 784 in an epoxy resin photopolymer.pdf
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268 KB
Format
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