Effect of Molecular Structure on Mesomorphism. 131Calorimetry of Smectic A Phase Diagrams Exhibiting Enhancement

Abstract
Three binary liquid crystal phase diagrams are presented for mixtures exhibiting enhancement of the smectic A-isotropic transition. Both temperature: composition and enthalpy: composition diagrams are given for each mixture. It is found that unambiguous assignment of temperature: composition diagrams are greatly facilitated when enthalpy:composition data is obtained concurrently.