Author/Authors :
Sofia Kara-Slimane، نويسنده , , Ulrich Maschke، نويسنده , , Farida Benmouna، نويسنده , , Maryse Bacquet، نويسنده , , Frédérick Roussel، نويسنده , , Jean-Marc Buisine، نويسنده , , Xavier Coqueret، نويسنده , , Mustapha Benmouna and Boualem Hammouda، نويسنده ,
Abstract :
The phase behavior of monofunctional acrylate and low molecular weight nematic liquid crystals (LC) is considered. Systems involving the monomeric 2-ethylhexylacrylate (2-EHA), the eutectic LC mixture known as E7 and the 4-cyano-4′-n-pentyl-biphenyl (5CB) are investigated. A similar investigation is performed on mixtures involving a polymer poly-2-EHA with molecular weight Mw=48,000 g/mol and both LCs. The experimental phase diagrams are established using polarized optical microscopy and analyzed using a theoretical formalism which combines the Flory–Huggins theory of isotropic mixing and the Maier–Saupe theory of nematic order. The results lead to characterization of the miscibility of E7 and 5CB with monomeric and analogous polymeric 2-EHA systems.
