Effects of Properties of Solvents on the Structure and the Stability of Lamellar Liquid Crystal

Abstract

Abstract: The measurements of ²H NMR gave three reasons for the decrease of the stability of lamellar liquid crystal in SDS/C₁₀OH/solvents when formamide was used as the solvent instead of waters the order parameter of SDS and C₁₀OH decreased, the degression of order parameter of SDS and C₁₀OH along the carbon chain increased and the compatibility of SDS with C₁₀OH decreased. The low angle X-ray measurements show that the permeability of the solvent in the lamellar liquid crystal was increased when water was replaced by formamide so that the interlayer spacing d decreased at a certain weight ratio of C₁₀OH/SDS and the dependence of the interlayer spacing d on the weight ratio of SDS/C₁₀OH changed.

Key words: Lamellar liquid crystal, Surfactant, ²HNMR, Low angle X-ray

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Guo Rong . Effects of Properties of Solvents on the Structure and the Stability of Lamellar Liquid Crystal[J]. Chem. J. Chinese Universities, 1991, 12(11): 1526.

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Effects of Properties of Solvents on the Structure and the Stability of Lamellar Liquid Crystal

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