LIQUID CRYSTALS FROM POLY(4,4'-METHOXYBIPHENYLYL METHACRYLATE).
Side-chain liquid crystalline poly(4,4'-biphenylyl methacrylate) was studied by x-ray diffraction. Three smectic phases were described using a ribbon-like structural model for the polymer chain. In the smectic S//P phase, ribbons lie flat on their sides to form layers with a spacing equal to the thickness of the ribbons. In the smectic S//A phase, the ribbons stand upright giving layers with a thickness corresponding to the length of one extended monomeric unit. In the ordered smectic S//O phase, the layer thickness also corresponds to one extended repeat unit, and the pendant groups are arranged according to a two-dimensional oblique lattice. The Schlieren texture observed in the S//P phase was analyzed in terms of symmetry.
Publication Source (Journal or Book title)
Journal de physique Paris
Duran, R., Guillon, D., Gramain, P., & Skoulios, A. (1987). LIQUID CRYSTALS FROM POLY(4,4'-METHOXYBIPHENYLYL METHACRYLATE).. Journal de physique Paris, 48 (12), 2043-2047. https://doi.org/10.1051/jphys:0198700480120204300