Orientation and Surface Anchoring of Nematic Liquid Crystals on Linearly Polymerized PhotopolymersPhysical Review E
AbstractThe liquid crystal orientation on a poly(vinyl cinnamate) or poly(vinyl 4-methoxy-cinnamate) coated solid substrate exposed to linearly polarized UV light has been studied. The angular distribution of the polymer side chains and the photoreaction products was derived as a function of exposure time using a simple assumption about the probability for crosslinking of two side chains. The liquid crystal was assumed to be weakly anchored to the surface but have a degree of order and orientation determined from those of the polymer side chains. The polar and the azimuthal surface coefficients were estimated as a function of exposure time using the Landau–de Gennes theory and the behavior of a twist cell with polymer plates was studied for the values of the calculated surface coefficients.
Citation InformationH. G Galabova, David W Allender and J. Chen. "Orientation and Surface Anchoring of Nematic Liquid Crystals on Linearly Polymerized Photopolymers" Physical Review E Vol. 55 Iss. 2 (1997) p. 1627 - 1631
Available at: http://works.bepress.com/david_allender/29/