Abstract
The latent ability to exhibit mesophase transition temperatures of a substance is determined for non-mesomorphic components of the binary systems, viz. Schiff's bases (B 1 , B 2 , B 3 ) by mixing them with a monotropic nematic component (A) as a common component. Components of the binary systems were prepared by established methods of preparation. The transition temperature of pure components and binary mixtures were observed through hot stage polarizing microscope. The phase diagrams are drawn for transition temperatures versus mole% of component (A). Analytical data support the structure of the molecules. The latent transition temperature of each non liquid crystal component is determined by the extrapolation of nematic-isotropic (or vice versa) transition curve to zero mole% of (A). The values of latent transition temperatures (LTTs) for different Schiff's bases are determined and well agree with previously work. Thus, reliability of extrapolation method is raised and credibility to the conclusions already drawn earlier is supported by present investigation.
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