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Photoinduced Alignment Based on the Blend of Poly(vinyl cinnamate) and Oligomeric Cinnamate via Linear Polarized UV Irradiation onto Groove Patterned Surface  

Sung, Shi-Joon (Public & Original Technology Research Center, Daegu Gyeongbuk Institute of Science and Technology(DGIST))
Kim, Mi-Ri (Division of Advanced Materials Engineering, Kongju National University)
Ahn, Do-Won (Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology)
Kim, Dae-Hwan (Public & Original Technology Research Center, Daegu Gyeongbuk Institute of Science and Technology(DGIST))
Kang, Jin-Kyu (Public & Original Technology Research Center, Daegu Gyeongbuk Institute of Science and Technology(DGIST))
Park, Jung-Ki (Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology)
Cho, Kuk-Young (Division of Advanced Materials Engineering, Kongju National University)
Publication Information
Polymer(Korea) / v.34, no.1, 2010 , pp. 32-37 More about this Journal
Abstract
Photo-alignment property of groove patterned surface prepared from blend of poly (vinyl cinnamate) (PVCi) and oligomeric dicinnamate was investigated for the application for alignment layer of liquid crystal display. The study of the photoreaction kinetics using UV-vis spectrum with the irradiation time showed that the reaction rate of oligomeric cinnamate was enhanced compared to that of PVCi. Blend where PVCi was main component showed a slight improvement on the photoreaction rate. It was unable to obtain groove patterned surface only using oligomeric cinnamate itself owing to the high crystalline character. However, blending of PVCi made it possible to obtain clear surface pattern. Molecular orientation could be confirmed from the polar plot data. It can be suggested that blend of oligomeric cinnamate and polymeric cinnamate is promising material for the photoalignment layer.
Keywords
cinnamate; Photo-alignment; oligomer; linear polarized UV;
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Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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