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Thermodynamic and separation properties of 4-(octyloxy) benzoic acid liquid crystals by inverse gas chromatography (IGC)

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dc.contributor.authorIsik, Birol
dc.contributor.authorCakar, Fatih
dc.contributor.authorCankurtaran, Husnu
dc.contributor.authorCankurtaran, Ozlem
dc.date.accessioned2026-06-27T14:31:51Z
dc.date.issued2022
dc.description.abstractThe thermodynamic properties of 4-(octyloxy) benzoic acid (OBA) liquid crystal (LC) were investigated at infinite dilution by inverse gas chromatography (IGC). The phase transition temperatures of OBA LC were determined by differential scanning calorimetry (DSC) and IGC. The thermodynamic region was determined to be between 160 and 170 degrees C. Specific retention volumes were calculated using IGC measurements to prepare retention diagrams. The results from the diagrams were used to characterize the thermodynamic properties of the OBA LCs. Based upon these properties, the solvents used in this study were determined to be unsuitable for OBA LCs. The separation of structural isomer series (butyl acetate, butyl alcohol, and amyl alcohol series) was studied by an OBA LC coated Chromosorb W stationary phase in the thermodynamic region. This system was able to distinguish the isomers according to the determined selectivity coefficients.en
dc.description.sponsorshipYildiz Technical University Scientific Research Projects Coordination Department [FDK-2020-4071]
dc.description.urihttps://doi.org/10.1080/10739149.2021.1936014
dc.identifier.doi10.1080/10739149.2021.1936014
dc.identifier.eissn1525-6030
dc.identifier.endpage15
dc.identifier.issn1073-9149
dc.identifier.issue1
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/20.500.14981/61700
dc.identifier.volume50
dc.identifier.wos000660320000001
dc.language.isoeng
dc.publisherTAYLOR & FRANCIS INC
dc.relation.ispartofINSTRUMENTATION SCIENCE & TECHNOLOGY
dc.subjectInverse gas chromatography (IGC)
dc.subjectisomer separation
dc.subject4-(octyloxy) benzoic acid liquid crystal
dc.subjectphase transition temperatures
dc.subjectthermodynamic properties
dc.subjectSURFACE CHARACTERIZATION
dc.subjectSOLVENTS
dc.subjectTRANSITIONS
dc.subjectPARAMETERS
dc.subjectChemistry
dc.subjectInstruments & Instrumentation
dc.titleThermodynamic and separation properties of 4-(octyloxy) benzoic acid liquid crystals by inverse gas chromatography (IGC)
dc.typeArticle
dspace.entity.typePublication
local.import.sourceWOS

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