Frank Elastic Constants and Leslie-Ericksen Viscosity Coefficients of Nematic Solutions of a Rodlike Polymer
- 1 December 1987
- journal article
- dynamic aspects
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics
- Vol. 153 (1) , 133-142
- https://doi.org/10.1080/00268948708074531
Abstract
The formation of a monodoraain nematic liquid crystal with a solution of the rodlike poly[1,4-phenylene-2,6-benzobisthiazole] will be described, along with the results of elastic and quasi-elastic light scattering on the oriented solution. The latter are analyzed to give the ratios KS/KT = 15.8 and KS/KT = 7.3 for the Prank elastic constants and νS/νT = 0.86 and νS/νT = 0.14 for the Leslie-Ericksen viscosities. These are compared with theoretical models and with results observed for the shear stress and the flow birefringence in steady flow.Keywords
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