Evaluation of the surface properties of 4-(Decyloxy) benzoic acid liquid crystal and its use in structural isomer separation


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IŞIK B. , ÇAKAR F. , CANKURTARAN H. , CANKURTARAN Ö.

TURKISH JOURNAL OF CHEMISTRY, vol.45, no.3, pp.845-857, 2021 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 3
  • Publication Date: 2021
  • Doi Number: 10.3906/kim-2101-13
  • Title of Journal : TURKISH JOURNAL OF CHEMISTRY
  • Page Numbers: pp.845-857
  • Keywords: Inverse gas chromatography, liquid crystal, selectivity, surface properties, INVERSE GAS-CHROMATOGRAPHY, STATIONARY PHASES, THERMODYNAMICAL INTERACTIONS, DISPERSIVE COMPONENT, ENERGY, CELLULOSE, SOLVENTS, COHESION, CARBONS, FIBERS

Abstract

The selectivity of 4-(Decyloxy) benzoic acid (DBA) liquid crystal in surface adsorption region (303.2-328.2 K) and thermodynamic region (423.2 - 433.2 K) was investigated by inverse gas chromatography at infinite dilution (IGC-ID). The selectivity parameters of the structural isomer series named butyl acetate, butyl alcohol, and amyl alcohol series were calculated for the DBA using IGC-ID technique. Additionally, the surface properties including dispersive surface energy (gamma(D)(S)), free energy (Delta G(A)(S)), enthalpy (Delta H-A(S)), and acidity-basicity constants were calculated with net retention volumes obtained from IGC-ID experiment results. When the Delta H-A(S) and Delta G(A)(S) are constants, DBA surface was found to be an acidic character (K-D/K-A congruent to 0.89).