Thermodynamic and surface characterisation of 4-[4-((S)-citronellyloxy) benzoyloxy] benzoic acid thermotropic liquid crystal


EROL I., ÇAKAR F. , OCAK H. , CANKURTARAN H. , CANKURTARAN Ö. , Bilgin-Eran B. , ...More

LIQUID CRYSTALS, vol.43, no.1, pp.142-151, 2016 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 43 Issue: 1
  • Publication Date: 2016
  • Doi Number: 10.1080/02678292.2015.1067334
  • Title of Journal : LIQUID CRYSTALS
  • Page Numbers: pp.142-151
  • Keywords: Inverse gas chromatography, liquid crystals, phase transition temperatures, thermodynamic interaction parameters, surface properties, INVERSE GAS-CHROMATOGRAPHY, TRANSITIONS, ADSORPTION, MOLECULES, COVERAGE, POLYMER

Abstract

The inverse gas chromatography (IGC) method was used to obtain thermodynamic and surface properties of the thermotropic liquid crystalline material, 4-[4-((S)-citronellyloxy)benzoyloxy] benzoic acid (CBB). Liquid crystal (LC) selectivity was investigated using the alcohol and acetate isomers by the IGC method at temperatures between 338.2 K and 463.2 K. The retention diagrams of n-decane, undecane, dodecane, tridecane, n-butyl acetate, iso-butyl acetate, ethylbenzene and chlorobenzene on CBB were plotted in the temperature range between 468.2 K and 493.2 K. The specific retention volume, V-g(0), Flory-Huggins interaction parameter, x12, equation-of- state interaction parameter, x*12, the partial molar heat of sorption, Delta H-1(s), the partial molar heat of mixing,. similar to H11, the molar heat of vaporization,. Delta HV and the weight fraction activity coefficient, O11, were determined.