PHASE-DIAGRAMS OF BINARY-SYSTEMS OF NONMESOGENIC COMPONENTS - CESIUM-SODIUM AND CESIUM-LITHIUM ISO-BUTYRATES

The phase diagrams of the binary systems given in the title have been studied by differential thermal analyses and hot stage polarization mi croscopy. Smectic liquid crystals are found in some composition ranges of the binary with sodium iso-butyrate. The liquid crystal appearance in this system is explained by latent mesomorphism of both components and by the additional electrostatic stabilization of the ionic mesoph ase because of dissimilar cation interactions. The unlike conditions f or the exhibition of latent mesomorphism of caesium isobutyrate in the two systems is discussed.