화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.436, 1121-1130, 2005
Smectic A - Cholesteric phase transition: A viscosity study
Viscosity measurements of the cholesteryl myristate as a function of temperature and shear rate are presented. Ranging from the smectic A phase to the isotropic phase the data cover every liquid crystalline interval of the compound. It is shown that the viscosity values of the sample, originated from the non-fixed director alignment, can be reduced to a unique temperature dependent curve. That is, using a simple scaling hypothesis, it is shown that curves corresponding to the different shear rates coalesce into a single viscosity curve characterizing each different phase of the compound.