Thermal and optical properties of some hydrogen-bonded liquid crystal mixtures

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dc.authoridOKUMUS, MUSTAFA -- 0000-0003-0369-7686
dc.contributor.authorOkumuş, Mustafa
dc.contributor.authorÖzgan, Şükrü
dc.contributor.authorYılmaz, Süleyman
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-29T19:27:15Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-29T19:27:15Z
dc.date.issued2014
dc.departmentEğitim Fakültesi
dc.description.abstractPhase transition properties of the mixtures of hydrogen-bonded nematic liquid crystals (HBLC) 4-hexylbenzoic acid (6BA), 4-(octyloxy)benzoic acid (8OBA), and 4-(decyloxy)benzoic acid (10OBA) have been investigated by means of differential scanning calorimetry (DSC) and polarize optic microscope (POM). The DSC and POM results clearly indicate the existence of smectic and nematic phase transitions in binary mixtures. The phase transition temperature values of 6BA/10OBA mixtures have clearly increased with increasing heating rate. The activation energies were calculated for the phase transitions of 6BA/10OBA liquid crystal (LC) mixture. The optical transmittance of these mixed hydrogen-bonded nematic liquid crystals was investigated in terms of temperature variations through electrooptic methods. The electrooptic experiments indicate that, while low in the nematic phase, the optical transmittance is very high at the nematic-isotropic phase transition. The transmitted light intensity values of 6BA/8OBA mixture are somewhat higher than those of other binary mixtures, 6BA/10OBA and 8OBA/10OBA, a result associated with the different alkyloxy chain lengths.
dc.description.sponsorshipKahramanmaras Sutcu Imam University Scientific Research Projects Coordination Department [2011/3-43 D]
dc.description.sponsorshipThe work has been supported by Kahramanmaras Sutcu Imam University Scientific Research Projects Coordination Department under Project Number: 2011/3-43 D.
dc.identifier.doi10.1007/s13538-014-0217-7
dc.identifier.endpage333en_US
dc.identifier.issn0103-9733
dc.identifier.issn1678-4448
dc.identifier.issue4en_US
dc.identifier.scopusqualityQ3
dc.identifier.startpage326en_US
dc.identifier.urihttps://doi.org/10.1007/s13538-014-0217-7
dc.identifier.urihttps://hdl.handle.net/20.500.12451/5823
dc.identifier.volume44en_US
dc.identifier.wosWOS:000339008500004
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSPRINGER
dc.relation.ispartofBRAZILIAN JOURNAL OF PHYSICS
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectLiquid Crystal Mixtures
dc.subjectThermodynamic Properties
dc.subjectOptical Properties
dc.titleThermal and optical properties of some hydrogen-bonded liquid crystal mixtures
dc.typeArticle

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