ScienceAsia 6 (1980): 112-122 |doi: 10.2306/scienceasia1513-1874.1980.06.112

NEMATIC ISOTROPIC TRANSITION TEMPERATURE OF BINARY NEMATIC LIQUID CRYSTAL MIXTURES

ORAPIN PHAOVIBUL^a and I-MING TANG^b

Summary: Using the pseudo potentials proposed by Humphries, lames and Luckhurst in a Bethe-Peierls-Weiss cluster approach, the partition functions for a binary mixture of nematic liquid crystals are obtained. By taking the partial derivatives of the logarithms of the partition functions with respect to various parameters, a functional expression for the nematic isotropic transition temperature is obtained and is used to reconstruct the nematic isotropic phase boundaries of p. azoxyanisole (PAA) and p-p'-di-n-hexyloxyazoxybenzene (PHAB) mixtures and of p.azoxyanisole and p.p'-di-n-pentyloxyazoxybenzene (PPAB) mixtures.

Download PDF

a Department of Chemistry, Faculty of Science, Mahidol University, Bangkok 4, Thailand
b Department of Physics, Faculty of Science, Mahidol University, Bangkok 4, Thailand

Received 8 August 1980