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In relation to this article, we declare that there is no conflict of interest.
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Received June 20, 2007
Accepted January 14, 2008
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Diffraction efficiency change in PVA/AA photopolymer films by photosensitive inorganic compound addition

Chemical Engineering Department, Kwangwoon University, 447-1, Wolgye, Nowon, Seoul 139-701, Korea
kdh@kw.ac.kr
Korean Journal of Chemical Engineering, July 2008, 25(4), 874-880(7), 10.1007/s11814-008-0144-9
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Abstract

The highest diffraction efficiency (DE) value after illumination and post-curing of photopolymer films were obtained at the SeO2/Acrylamide (AA) Ratios of AA 3.0 g, SeO2 1.0 g and the DE’s were stable values of over 90%. By the addition of SeO2, the maximum DE at the initial stage of illumination was reached at 300 seconds, which suggests SeO2 slows down the photopolymerization of. DE variation curve for the optimum composition during extendedtime illumination of 9,000 seconds resembles a sine curve due to the combination of the monomer diffusion and the photopolymerization, and the photopolymer film expanded at about 8% after photopolymerization due to monomer migration.

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