Title

Effect of Salt on the Phase Diagrams of Two Binary Lyotropic Liquid Crystalline Solutions

Publication Title

Liquid Crystals

Publication Date

1994

Document Type

Article

DOI

10.1080/02678299408036736

Disciplines

Physics

Abstract

The effect of adding salts NH4OH and CsOH to aqueous solutions of NH4PFO and CsPFO, respectively, was studied for concentrations in the range 0 to 2 wt %. In both systems, the isotropic to nematic and nematic to lamellar phase transition temperatures were elevated. There was an insignificant effect on the width of the nematic range in the NH4PFO system, while the nematic phase was widened by as much as ∼3°C in the case of CsPFO. High-resolution X-ray scattering measurements were performed to determine the micellar size and its dependence on temperature for 52 wt % NH4PFO solution in water.

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