Structural peculiarities of micelles in lamellar mesophase of lyotropic liquid crystalline systems: Shape, sizes and anisometricity

Abstract

In this work structural peculiarities of the disk-like (the plate-like) micelles in lyotropic liquid crystalline lamellar D mesophase have been investigated. Binary and ternary lyotropic systems, which are based on sodium (dodecyl) lauryl sulphate, were used. D mesophase in such systems was displayed by texture with oily streak formations on the pseudo-isotropic background. The method for the study of the electrical conductivity anisotropy in the orientational shear flow has been applied for estimation of structural peculiarities of micelles in D mesophase. The effective diameter, the parameters of anisometricity, the form factor and the volumes of the disk-like (plate-like) micelles have been determined. Comparative estimates of structural peculiarities of the disk-like (plate-like) micelles for binary and ternary lyotropic systems have been carried out. (C) 2013 Elsevier B.V. All rights reserved.