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Molecular Crystals and Liquid Crystals Volume 546, 2011 - Issue 1: Proceedings of the 23rd International Liquid Crystal Conference (ILCC 2010) Part VII of VIII
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Surfaces and Confined Systems

Mechanical Properties of Polymer/Liquid Crystal Films Elaborated by Electron Beam and UV Radiation

A. Berrayah Laboratoire de Recherche sur les Macromolécules, Département de Physique, Faculté des Sciences, Université Aboubakr Belkaïd de Tlemcen, Tlemcen, Algeria
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L. Zair Laboratoire de Recherche sur les Macromolécules, Département de Physique, Faculté des Sciences, Université Aboubakr Belkaïd de Tlemcen, Tlemcen, Algeria
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A. Olivier Unité de Matériaux et de Transformations UMET (UMR CNRS N°8207), Université Lille 1 – Sciences et Technologies, Villeneuve d'Ascq, France; Max-Planck-Institute of Polymer Research, Mainz, Germany
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U. Maschke Unité de Matériaux et de Transformations UMET (UMR CNRS N°8207), Université Lille 1 – Sciences et Technologies, Villeneuve d'Ascq, FranceCorrespondence[email protected]
Pages 134/[1604]-142/[1612] | Published online: 16 Jun 2011
 
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Abstract

The thermomechanical properties of electron beam (EB) and ultraviolet (UV) cured TPGDA (tripropyleneglycol diacrylate)/liquid crystal (LC) blends were the subject of static and dynamic analysis. In the glassy region of the LC, a very strong temperature dependence on the polymer storage modulus was found for EB-cured networks in the range of compositions 40–60 weight.-% of LC. Above the LC glass transition temperature (T g), the LC behaves like a plasticizing agent. Below T g of the LC, the LC reinforces the polymer. In the case of the UV-cured system, the effect of plasticizing of the LC remains dominant from −100 to +100°C.

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