Phase Diagrams of Monomeric and Electron Beam Cured Propoxylated Glyceroltriacrylate/Low Molecular Weight Liquid Crystal Systems

Equilibrium phase diagrams of mixtures of propoxylated glyceroltriacrylate (GPTA) and low molecular weight liquid crystals (LMWLCs) are investigated. The experimental phase diagrams of monomeric and electron beam (EB) cured GPTA/LMWLC blends are established by polarized optical microscopy (POM). Thr...

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Published in:Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals Molecular crystals and liquid crystals, 2001-07, Vol.365 (1), p.655-663
Main Authors: Maschke, U., Benmouna, F., Roussel, F., Daoudi, A., Gyselinck, F., Buisine, J.-M., Coqueret, X., Benmouna, M.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
electron beam curing
Equations of state, phase equilibria, and phase transitions
Exact sciences and technology
Liquid crystal
microscopy
monomer
network
Organic polymers
phase diagram
Physicochemistry of polymers
Physics
Properties and characterization
Specific phase transitions
Structure, morphology and analysis
Transitions in liquid crystals
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Summary:Equilibrium phase diagrams of mixtures of propoxylated glyceroltriacrylate (GPTA) and low molecular weight liquid crystals (LMWLCs) are investigated. The experimental phase diagrams of monomeric and electron beam (EB) cured GPTA/LMWLC blends are established by polarized optical microscopy (POM). Three LMWLC are used exhibiting different nematic-isotropic transition temperatures. One is the single component LMWLC 4-cyano-4′-n-pentyl-biphenyl (5CB), another one is the eutectic mixture known as E7, and the third one is the single component 4-cyano-4′-n-octyl-biphenyl (8CB) exhibiting both nematic and smectic A orders. The experimental data are successfully analyzed within a unified theoretical treatment based on mean field approximations.
ISSN:1058-725X
DOI:10.1080/10587250108025344