Equilibrium phase behavior of nematic mixtures

• DOI: 10.1063/1.470318
• Publication Date: 2002-07-26T12:36:59Z
• Authors: Hao-Wen Chiu; Thein Kyu
• Keywords: Flory–Huggins solution theory; Interaction energy; Biaxial nematic; Molar mass

A phenomenological model for predicting phase diagrams of a binary nematic mixture containing side chain liquid crystalline polymers and/or low molar mass crystals has been proposed by combining Flory–Huggins free energy isotropic mixing and Maier–Saupe ordering the nematogens. Two orientational order parameters, s1 s2, two components in mixtures having different clearing temperatures are taken into consideration calculation. The interaction parameter, χ, parameter theory, ν11 ν22, assumed to be functions inverse absolute temperature. Further cross-nematic is proportional square root product parameters mesogens, i.e., ν12=c (ν11⋅ν22)1/2. theory predicts variety depending on single c, which measure relative strength between dissimilar mesogens that same species. predicted have tested rigorously with experimental various reported others as well us.