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dc.contributor.authorUğur, Şaziyetr_TR
dc.contributor.authorYargı, Öndertr_TR
dc.contributor.authorGünister, Ebrutr_TR
dc.contributor.authorPekcan, Mehmet Öndertr_TR
dc.date.accessioned2015-01-15T23:01:05Z
dc.date.available2015-01-15T23:01:05Z
dc.date.issued2008-12
dc.identifier.citationUğur, Ş., Yargı, Ö., Günister, E., & Pekcan, Ö. (2008). Poly (styrene) latex/modified na-activated bentonite nanocomposite films: A fluorescence study. Applied Clay Science, 42(1), 39-49. doi:10.1016/j.clay.2008.02.009en_US
dc.identifier.issn0169-1317
dc.identifier.issn1872-9053
dc.identifier.otherWOS:000261932700005
dc.identifier.urihttp://hdl.handle.net/11729/278
dc.identifier.urihttp://dx.doi.org/10.1016/j.clay.2008.02.009
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.language.isoenen_US
dc.publisherELSEVIER SCIENCE BV.en_US
dc.relation.isversionof10.1016/j.clay.2008.02.009
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.sourceApplied Clay Scienceen_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.subjectVoid closureen_US
dc.subjectMontmorilloniteen_US
dc.subjectLatexen_US
dc.subjectClayen_US
dc.subjectParticlesen_US
dc.subjectPolymerizationen_US
dc.subjectInterdiffusionen_US
dc.subjectIntercalationen_US
dc.titlePoly (styrene) latex/modified na-activated bentonite nanocomposite films: a fluorescence studyen_US
dc.typearticleen_US
dc.contributor.departmentIşık Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümütr_TR
dc.contributor.departmentIsik University, Faculty of Arts and Sciences, Department of Physicsen_US
dc.contributor.authorIDTR151504
dc.contributor.authorIDTR151504
dc.contributor.authorIDTR174624
dc.identifier.volume42
dc.identifier.issue1
dc.identifier.startpage39
dc.identifier.endpage49
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US


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