Investigation of thermodynamic properties of 4-decyloxybiphenyl-4 '-carboxylic acid liquid crystal and preparation of polymer dispersed liquid crystal composite

Öztürk E., Ocak H., Çakar F., Karanlık G., Cankurtaran Ö., Bılgın-Eran B.

JOURNAL OF MOLECULAR LIQUIDS, vol.265, pp.24-30, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 265
  • Publication Date: 2018
  • Doi Number: 10.1016/j.molliq.2018.05.080
  • Journal Name: JOURNAL OF MOLECULAR LIQUIDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.24-30
  • Keywords: Liquid crystal, Thermodynamic interaction parameters, Inverse gas chromatography, Poly(methyl methacrylate), Polymer dispersed liquid crystal composite, INVERSE GAS-CHROMATOGRAPHY, SURFACE, TRANSITIONS, PARAMETERS, PHASES
  • Yıldız Technical University Affiliated: Yes

Abstract

In this study, firstly, retention behavior of solvents on the liquid crystalline material 4-decyloxybiphenyl-4'-carboxylic acid (DBCA) has been studied by inverse gas chromatography (IGC) technique. Liquid crystal (LC) selectivity was investigated using the acetate isomers by the IGC method at temperatures between 333.2 K and 543.2 K. Later on, the interactions of LC with n-octane, n-nonane, n-decane, undecane, dodecane, tridecane, npropyl benzene, isopropyl benzene, ethylbenzene, chlorobenzene and toluene between 518.2 K and 543.2 K were examined. LC-solvent interaction parameters for Flory-Huggins theory, chi(12)*, and equation of state theory, chi(12)*, effective exchange energy parameters, X-eff, the weight fraction activity coefficent, Omega(infinity)(1), the partial molar heat of mixing at infinite dilution of the solvent, Delta H-1(infinity), molar heat of vaporization of solvent, Delta H-v and the partial molar heat of sorption of the solvent, Delta H-1,H-s were obtained.