Temperature effect on drying and swelling of kappa carrageenan gels: A steady state fluorescence study

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dc.authorid0000-0001-7127-5915
dc.authorid0000-0002-0082-8209
dc.contributor.authorTarı İlgin, Özlemen_US
dc.contributor.authorPekcan, Mehmet Önderen_US
dc.date.accessioned2015-07-14T23:48:12Z
dc.date.available2015-07-14T23:48:12Z
dc.date.issued2008
dc.departmentIşık Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.departmentIşık University, Faculty of Arts and Sciences, Department of Physicsen_US
dc.description.abstractA novel technique based on in situ steady state fluorescence (SSF) measurements is introduced for studying drying and swelling Of kappa(-) carrageenan (kappa carrageenan) gels at various temperatures. kappa(-) carrageenan gels were completely dried and then swelled in water vapor. Pyranine was embedded in kappa(-) carrageenan and used as a fluorescence probe. Scattered light intensities, I-SC and fluorescence intensities, I were monitored during the drying and swelling Of kappa(-) carrageenan gels. it was observed that the fluorescence intensity decreased linearly as drying time was increased. A simple model consisting of Case II diffusion was used to quantify the drying processes of the kappa(-) carrageenan gels. This moving boundary model provided packing constant, kappa(o). During swelling, fluorescence intensity increased exponentially as time is increased. The increase in I, was modeled using Li-Tanaka equation from which swelling time constants, tau(c) and cooperative diffusion coefficients, D-c were determined. It was observed that swelling time constants, tau(c) decreased and diffusion coefficients, D-c increased as the swelling temperature was increased. Activation energies for drying and swelling were also obtained and found to be 53.9 and 47.2 kJ mol(-1), respectively.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationTarı İlgin, Ö. & Pekcan, M. Ö. (2008). Temperature effect on drying and swelling of kappa carrageenan gels: A steady state fluorescence study. Macromolecular Symposia, 265(1), 37-48. doi:10.1002/masy.200850505en_US
dc.identifier.doi10.1002/masy.200850505
dc.identifier.endpage48
dc.identifier.issn1022-1360
dc.identifier.issn1521-3900
dc.identifier.scopus2-s2.0-54949096102
dc.identifier.scopusqualityQ3
dc.identifier.startpage37
dc.identifier.urihttps://hdl.handle.net/11729/638
dc.identifier.urihttp://dx.doi.org/10.1002/masy.200850505
dc.identifier.volume265
dc.identifier.wosWOS:000256716900006
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakConference Proceedings Citation Index – Science (CPCI-S)en_US
dc.institutionauthorPekcan, Mehmet Önderen_US
dc.institutionauthorid0000-0002-0082-8209
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherWiley-V C H Verlag GMBHen_US
dc.relation.ispartofMacromolecular Symposiaen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCooperative diffusion coefficientsen_US
dc.subjectDryingen_US
dc.subjectFluorescenceen_US
dc.subjectKappa(-) carrageenanen_US
dc.subjectSwellingen_US
dc.subjectFast transient fluorescenceen_US
dc.subjectPoly(Methyl Methacrylate) Gelsen_US
dc.subjectPolymer networksen_US
dc.subjectKineticsen_US
dc.subjectShrinkingen_US
dc.subjectHeterogelsen_US
dc.subjectSwollenen_US
dc.subjectABS resinsen_US
dc.subjectActivation energyen_US
dc.subjectBiomechanicsen_US
dc.subjectColloidsen_US
dc.subjectDewateringen_US
dc.subjectDiffusionen_US
dc.subjectGelationen_US
dc.subjectGelsen_US
dc.subjectLight emissionen_US
dc.subjectLithiumen_US
dc.subjectLuminescenceen_US
dc.subjectRespiratory mechanicsen_US
dc.subjectSemiconductor dopingen_US
dc.subjectWater vaporen_US
dc.subjectCarrageenanen_US
dc.subjectCarrageenan gelsen_US
dc.subjectCase IIen_US
dc.subjectDiffusion coefficientsen_US
dc.subjectDrying processesen_US
dc.subjectDrying timesen_US
dc.subjectFluorescence intensitiesen_US
dc.subjectFluorescence probesen_US
dc.subjectIn-situen_US
dc.subjectMoving boundariesen_US
dc.subjectNovel techniquesen_US
dc.subjectPyranineen_US
dc.subjectScattered lighten_US
dc.subjectSIMPLE modelsen_US
dc.subjectSteady state fluorescencesen_US
dc.subjectSwelling temperaturesen_US
dc.subjectSwelling timesen_US
dc.subjectTanaka equationsen_US
dc.subjectTemperature effectsen_US
dc.subjectCuringen_US
dc.titleTemperature effect on drying and swelling of kappa carrageenan gels: A steady state fluorescence studyen_US
dc.typeConference Objecten_US
dspace.entity.typePublication

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