Thermodynamics of nematic liquid crystalline mixtures of similar molecules

K. Z. Ogorodnik

doi:10.1117/12.472175

27 June 2002 Thermodynamics of nematic liquid crystalline mixtures of similar molecules

K. Z. Ogorodnik

Proceedings Volume 4759, XIV Conference on Liquid Crystals: Chemistry, Physics, and Applications; (2002) https://doi.org/10.1117/12.472175
Event: XIV Conference on Liquid Crystals, Chemistry, Physics, and Applications, 2001, Zakopane, Poland

Abstract

Mixtures of the first six members of homologous series 4,4'- di-n-alcoxyazoxybenzenes were investigated by DSC and HSM (heat stage microscopy) methods. A solid crystal (SC) form of the third member (C₃) of the series is found which is virtual for the pure substance and is real for mixtures with the homologous. It is shown that a type of admixture C_n changes relative stability of SC forms K_v, K₁, K₂ of the pure C₃. A eutectic manifestation of mixture (K₁ + K₂) is found. Four SC forms of C₃ have an equal enthalpy of transitions to a melt. Melting in the mesophase is accompanied by transformations of crystal structures.

Citation Download Citation

K. Z. Ogorodnik "Thermodynamics of nematic liquid crystalline mixtures of similar molecules", Proc. SPIE 4759, XIV Conference on Liquid Crystals: Chemistry, Physics, and Applications, (27 June 2002); https://doi.org/10.1117/12.472175

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