Photoinitiation study of Irgacure 784 in an epoxy resin photopolymer
- UCD Communications and Optoelectronic Research Centre, SFI Strategic Research Cluster in Solar Energy Conversion, School of Electrical, Electronic and Mechanical Engineering, College of Engineering, Mathematical and Physical Sciences, University College Dublin, Belfield, Dublin 4 (Ireland)
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.
- OSTI ID:
- 21503570
- Journal Information:
- Journal of Applied Physics, Vol. 107, Issue 5; Other Information: DOI: 10.1063/1.3276173; (c) 2010 American Institute of Physics; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Analysis of the photoabsorptive behavior of two different photosensitizers in a photopolymer material
Preparation of polymer/LDH nanocomposite by UV-initiated photopolymerization of acrylate through photoinitiator-modified LDH precursor