Phase Diagrams of Binary Nematic Mesophase Systems II

Abstract

Temperatures and heats of transition are presented for two binary nematic mesophases: p-azoxyanisole plus p-anisalazine, and p-azoxyphenetole plus p-anisalazine. Temperatures of transition are also given for three additional binary mesophase systems: p-azoxyanisole plus p-[(p-methoxybenzylidene)amino]phenyl acetate, N-(ethoxybenzylidene)-p-butylaniline and p, p'-di-n-heptyloxyazoxybenzene. The phase diagrams are of the simple eutectic type with the formation of ideal comesophase solutions permitting prediction of the eutectic composition and temperature. The heats of transitions can be estimated with reasonable accuracy.