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

Authors

BİROL IŞIK
FATİH ÇAKAR
HÜSNÜ CANKURTARAN
ÖZLEM CANKURTARAN

DOI

10.3906/kim-2101-13

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 (γ SD), free energy (ΔGAS), enthalpy (ΔHAS), and acidity-basicity constants were calculated with net retention volumes obtained from IGC-ID experiment results. When the ΔHAS and ΔGAS are constants, DBA surface was found to be an acidic character (KD/KA ≅ 0.89).

Keywords

Inverse gas chromatography, liquid crystal, selectivity, surface properties

First Page

845

Last Page

857

Recommended Citation

IŞIK, BİROL; ÇAKAR, FATİH; CANKURTARAN, HÜSNÜ; and CANKURTARAN, ÖZLEM (2021) "Evaluation of the surface properties of 4-(Decyloxy) benzoic acid liquid crystal and its use in structural isomer separation," Turkish Journal of Chemistry: Vol. 45: No. 3, Article 27. https://doi.org/10.3906/kim-2101-13
Available at: https://journals.tubitak.gov.tr/chem/vol45/iss3/27