Optical, Electro-Optical, and Dielectric Properties of Acrylic Tripropyleneglycol Based Polymer Network Systems Including LCs

Y. Derouiche Unité Matériaux et Transformations (UMET), UMR 8207–CNRS, Bâtiment C6, Université Lille 1 – Sciences et Technologies, 59655 Villeneuve d’Ascq Cedex, France; Max-Planck Institute of Polymer Research, Postfach 3148, 55021 Mainz, Germany; Laboratoire des dispositifs des micro-ondes et matériaux pour les énergies renouvelables, Université ZIANE Achour, 17000 Djelfa, Algeria

K. Koynov Max-Planck Institute of Polymer Research, Postfach 3148, 55021 Mainz, Germany

F. Dubois UDSMM, Université du Littoral – Côte d’Opale, 62228 Calais, France

R. Douali UDSMM, Université du Littoral – Côte d’Opale, 62228 Calais, France

C. Legrand UDSMM, Université du Littoral – Côte d’Opale, 62228 Calais, France

U. Maschke Unité Matériaux et Transformations (UMET), UMR 8207–CNRS, Bâtiment C6, Université Lille 1 – Sciences et Technologies, 59655 Villeneuve d’Ascq Cedex, France

Abstract

Polymer/liquid crystal (LC) films were elaborated by photopolymerization using UV radiation of mixtures made up of a LC, a monomer and a photoinitiator. Three acrylic difunctional tripropyleneglycol based monomers possessing the same chemical structures were studied. The monomer/LC films exhibit distinguished morphologies presenting specific LC domain sizes, which were observed by polarized optical microscopy. These results were correlated with the electro-optical responses of the corresponding polymerized/crosslinked systems. A detailed characterization by linear dielectric spectroscopy of monomers and corresponding polymers was carried out as a function of temperature in the frequency range from 20 Hz to 1 MHz.

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Optical, Electro-Optical, and Dielectric Properties of Acrylic Tripropyleneglycol Based Polymer Network Systems Including LCs

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Optical, Electro-Optical, and Dielectric Properties of Acrylic Tripropyleneglycol Based Polymer Network Systems Including LCs

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