Investigation of thermodynamic and surface characterisation of 4-[4-(2-ethylhexyloxy)benzoyloxy] benzoic acid thermotropic liquid crystal by inverse gas chromatography

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dc.contributor.authorÇakar, Fatih
dc.contributor.authorOcak, Hale
dc.contributor.authorÖztürk, Emine
dc.contributor.authorMutlu Yanıç, Serap
dc.contributor.authorKaya, Dila
dc.contributor.authorSan, Nevim
dc.contributor.authorCankurtaran, Özlem
dc.date.accessioned2024-06-13T20:18:08Z
dc.date.available2024-06-13T20:18:08Z
dc.date.issued2014
dc.departmentMeslek Yüksekokulu, Gedik Meslek Yüksekokulu, Kimya Teknolojisi Programı
dc.description.abstractThe inverse gas chromatography method was used to obtain thermodynamic and surface properties of the thermotropic liquid crystalline material, 4-[4-(2-ethylhexyloxy) benzoyloxy]benzoic acid (EBBA). The retention diagrams of undecane, dodecane, tridecane, ethyl acetate, n-butyl acetate, iso-butyl acetate, toluene, ethylbenzene, iso-propylbenzene, n-propylbenzene and chlorobenzene on EBBA were plotted at temperatures between 443.2 and 468.2 K. The specific retention volume, V-g(0), Flory-Huggins interaction parameter, chi(infinity)(12), equation-of-state interaction parameter,. chi(*)(12), and effective exchange energy parameter, X-eff, were determined. The dispersive component of the surface free energy, gamma(D)(S), of the studied adsorbent surface was estimated using retention times of different nonpolar organic solvents in the infinite dilution region. The specific free energy of adsorption, Delta G(A)(S), the enthalpy of adsorption, Delta H-A(S), and the entropy of adsorption, Delta S-A(S), of solvents on liquid crystal were determined. The values of Delta H-A(S) were correlated with the donor and the acceptor numbers of the probes to quantify the acidic K-A and the basic K-D parameters of the liquid crystal surface. The values obtained for K-A and K-D parameters indicated an acidic character for the surface of EBBA.
dc.identifier.doi10.1080/02678292.2014.919672
dc.identifier.endpage1331
dc.identifier.issn0267-8292
dc.identifier.issn1366-5855
dc.identifier.issue9
dc.identifier.scopus2-s2.0-84904059897
dc.identifier.scopusqualityQ2
dc.identifier.startpage1323
dc.identifier.urihttps://doi.org/10.1080/02678292.2014.919672
dc.identifier.urihttps://hdl.handle.net/11501/1245
dc.identifier.volume41
dc.identifier.wosWOS:000338705100012
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorMutlu Yanıç, Serap
dc.institutionauthorid0000-0003-3543-0273
dc.language.isoen
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofLiquid Crystals
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectLiquid Crystals
dc.subjectInverse Gas Chromatography
dc.subjectThermodynamic Interaction Parameters
dc.subjectSurface Properties
dc.titleInvestigation of thermodynamic and surface characterisation of 4-[4-(2-ethylhexyloxy)benzoyloxy] benzoic acid thermotropic liquid crystal by inverse gas chromatography
dc.typeArticle

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