Poly (styrene) latex/modified na-activated bentonite nanocomposite films: a fluorescence study

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dc.authorid0000-0003-2876-470X
dc.authorid0000-0001-6343-0057
dc.authorid0000-0002-7797-604X
dc.authorid0000-0002-0082-8209
dc.contributor.authorUğur, Şaziyeen_US
dc.contributor.authorYargı, Önderen_US
dc.contributor.authorGünister, Ebruen_US
dc.contributor.authorPekcan, Mehmet Önderen_US
dc.date.accessioned2015-01-15T23:01:05Z
dc.date.available2015-01-15T23:01:05Z
dc.date.issued2008-12
dc.departmentIşık Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.departmentIşık University, Faculty of Arts and Sciences, Department of Physicsen_US
dc.description.abstractWe studied film formation of composites of surfactant-free polystyrene (PS) nanoparticles and modified Na-activated bentonite (MLB), by steady state fluorescence (SSF) technique. The films were prepared from a mixture of pyrene (P)-labeled PS particles and MLB at various compositions at room temperature. These films were annealed at elevated temperatures above the glass transition (T(g)) temperature of polystyrene for 10 min. Scattered light (I(S)) and fluorescence intensities (I(P)) from P were measured after each annealing step to monitor the stages of film formation. Evolution of transparency of the composite films was monitored by using photon transmission intensity, I(tr) Atomic force microscopy (AFM) was used to detect the variation in physical structure of annealed composite films. The nanocomposite films exhibited a percolation threshold at 20 wt.% MLB content. Below this fraction two distinct film formation stages were observed which are known as void closure and interdiffusion and above this fraction no film formation was detected. At 0-20 wt.% MLB, minimum film formation, T(0), void closure, T(v) and healing, T(h) temperatures were determined. Void closure and interdiffusion stages were modeled and related activation energies were determined. Void closure activation energies decreased as the percent of MLB increased, no variation was observed in backbone activation energies.en_US
dc.identifier.citationUğur, Ş., Yargı, Ö., Günister, E. & Pekcan, M. Ö. (2008). Poly (styrene) latex/modified na-activated bentonite nanocomposite films: A fluorescence study. Applied Clay Science, 42(1-2), 39-49. doi:10.1016/j.clay.2008.02.009en_US
dc.identifier.doi10.1016/j.clay.2008.02.009
dc.identifier.endpage49
dc.identifier.issn0169-1317
dc.identifier.issn1872-9053
dc.identifier.issue1-2
dc.identifier.scopus2-s2.0-54849433820
dc.identifier.scopusqualityQ1
dc.identifier.startpage39
dc.identifier.urihttps://hdl.handle.net/11729/278
dc.identifier.urihttp://dx.doi.org/10.1016/j.clay.2008.02.009
dc.identifier.volume42
dc.identifier.wosWOS:000261932700005
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakScience Citation Index Expanded (SCI-EXPANDED)en_US
dc.institutionauthorPekcan, Mehmet Önderen_US
dc.institutionauthorid0000-0002-0082-8209
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherElsevier Science BVen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCompositeen_US
dc.subjectVoid closureen_US
dc.subjectInterdiffusionen_US
dc.subjectFluorescenceen_US
dc.subjectPolystyrene latexen_US
dc.subjectBentoniteen_US
dc.subjectLayered silicate nanocompositesen_US
dc.subjectDtabr surfactantsen_US
dc.subjectMontmorilloniteen_US
dc.subjectLatexen_US
dc.subjectClayen_US
dc.subjectParticlesen_US
dc.subjectPolymerizationen_US
dc.subjectInterdiffusionen_US
dc.subjectIntercalationen_US
dc.subjectActivation energyen_US
dc.subjectAnnealingen_US
dc.subjectCarbon fiber reinforced plasticsen_US
dc.subjectChemical activationen_US
dc.subjectComposite materialsen_US
dc.subjectElectromagnetic wavesen_US
dc.subjectGlass transitionen_US
dc.subjectLatexesen_US
dc.subjectLight emissionen_US
dc.subjectLuminescenceen_US
dc.subjectNanocompositesen_US
dc.subjectNanostructured materialsen_US
dc.subjectPercolation (fluids)en_US
dc.subjectPolystyrenesen_US
dc.subjectSodiumen_US
dc.subjectStyreneen_US
dc.subjectSurface active agentsen_US
dc.subjectAtomic force microscopyen_US
dc.subjectBiofilmen_US
dc.subjectExperimental mineralogyen_US
dc.subjectSimulated annealingen_US
dc.subjectActivated bentonitesen_US
dc.subjectAtomic forcesen_US
dc.subjectElevated temperaturesen_US
dc.subjectFilm formationsen_US
dc.subjectFluorescence intensitiesen_US
dc.subjectFluorescence studiesen_US
dc.subjectNanocomposite filmsen_US
dc.subjectPercolation thresholdsen_US
dc.subjectPhoton transmissionsen_US
dc.subjectPhysical structuresen_US
dc.subjectRoom temperaturesen_US
dc.subjectScattered lighten_US
dc.subjectSteady state fluorescence techniquesen_US
dc.subjectVoid closuresen_US
dc.titlePoly (styrene) latex/modified na-activated bentonite nanocomposite films: a fluorescence studyen_US
dc.typeArticleen_US
dspace.entity.typePublication

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