Nanomaterials logo

Liquid Crystals and their Application
Russian Journal

Zhidkie kristally i ikh prakticheskoe ispol'zovanie

Жидкие кристаллы и их практическое использование

IvSU logo
Rus Eng

Menu

Our Facebook account

Dear authors and readers!
We are pleased to inform that the journal Liquid Crystals and their Application is included in Web of Science (Emerging Sources Citation Index) and Scopus (Q3) databases.

Journal



Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2018, 18 (2), 95—102.
DOI: 10.18083/LCAppl.2018.2.95





Application of the Hansen Solubility Parameter for Modelling of Liquid Crystal – Solvent Systems



S. M. Pestov, S. Yaghoubpour

Author affiliations
Moscow Technological University,
Institute of fine chemical technologies, Department of physical chemistry,
86 Vernadskogo Pr., Moscow, 119571, Russia
E-mail: pestovsm@yandex.ru

Abstract
Systems of nematic (smectic-nematic) liquid crystalline p-butyloxyphenyl p'-n-alkyloxybenzoates (n-alkyl = hexyl, heptyl, nonyl, decyl) and p-n-alkyloxybenzyliden-p'-toluidenes (n-alkyl = butyl, hexyl, nonyl) with solvents of different classes were studied. Systems were investigated by thermal analysis, polarizing microscopy, visual-polythermal and solubility methods. Solubilities of liquid crystals in solvents at 298 K were obtained. Thermodynamic methods based on the Hansen solubility parameters were used to predict the phase diagram type. Group-contribution scheme to calculate the Hansen solubility parameters of liquid crystals was used. Express-schemes (Teas triangle, distance) for selection of solvent to purify mesogens were proposed.

Keywords: liquid crystals, phenylbenzoates, alkyloxybenzyliden-toluidenes, phase diagrams, solubility, the Hansen solubility parameter, distance, Teas triangle





Feedback webmaster