Liquid Crystal-Polymer Composite Materials |
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| Authors: | U Maschke F Roussel J -M Buisine X Coqueret |
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| Institution: | 12. Laboratoire de Chimie Macromoléculaire, CNRS (URA No 351), Université des Sciences et Technologies de Lille, Batiment C6, F-59655, Villeneuve d’Ascq Cedex, France
22. Laboratoire de Dynamique et Structure des Matériaux Moléculaires, Equipe de Thermophysique de la Matière Condensèe, CNRS (URA No 801), Université du Littoral MREID, F-59140, Dunkerque, France
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| Abstract: | Polymer dispersed liquid crystal (PDLC) films can be switched electrically from a light-scattering off-state to a highly transparent on-state. Thin films were prepared via a polymerization-induced phase separation process, using electron beam radiation. The liquid crystal (LC)/polymer materials were obtained from blends of an eutectic nematie mixture E7 and a polyester acrylate-based polymer precursor. The optical and electro-optical properties of the PDLC films obtained depend strongly on the LC concentration. The LC solubility limit in the polymer matrix and the fractional amount of LC contained in the droplets were determined by means of calorimetrie measurements. |
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