Investigation of the Ribbon Structure of a Lyotropic Liquid Crystal by Deuterium Nuclear Magnetic Resonance

G. Chidichimo; N. A. P. Vaz; Z. Yaniv; J. W. Doane

doi:10.1103/PhysRevLett.49.1950

Investigation of the Ribbon Structure of a Lyotropic Liquid Crystal by Deuterium Nuclear Magnetic Resonance

G. Chidichimo, N. A. P. Vaz, Z. Yaniv, and J. W. Doane

Phys. Rev. Lett. 49, 1950 – Published 27 December 1982

Abstract

This paper reports observation, in a mixture of potassium palmitate- $d_{3}$ , potassium laurate, and water, of a lamellar phase above 41°C, a phase of elongated cylindrical aggregates below 36°C, and, in the intermediate temperature region, a phase in which the ${}^{2}H$ -NMR spectral patterns can be calculated from a model of elongated ribbon-shaped aggregates. The size of the ribbons can be determined from the spectra and is found to vary with temperature. The results are consistent with ${}^{2}H$ -NMR spectra of ${}^{2}H$ ${}_{2}O$ in the same and other ternary mixtures.