Photoinitiation study of Irgacure 784 in an epoxy resin photopolymer

Sabol, D and Gleeson, M. R. and Liu, S. and Sheridan, J. T. (2010) Photoinitiation study of Irgacure 784 in an epoxy resin photopolymer. Journal of Applied Physics, 107. ISSN 0021-8979

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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.

Item Type: Article
Keywords: Photoinitiation study; Irgacure 784; epoxy resin photopolymer;
Academic Unit: Faculty of Science and Engineering > Experimental Physics
Faculty of Science and Engineering > Chemistry
Faculty of Science and Engineering > Computer Science
Item ID: 3599
Identification Number: 053113
Depositing User: Michael Gleeson
Date Deposited: 30 Apr 2012 08:31
Journal or Publication Title: Journal of Applied Physics
Publisher: American Institute of Physics
Refereed: Yes
Funders: Irish Research Council of Science, Engineering and Technology

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