Void closure and interdiffusion in latex film formation by photon transmission and fluorescence methods

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dc.authoridPEKCAN, Onder/0000-0002-0082-8209
dc.authorwosidPEKCAN, Onder/Y-3158-2018
dc.contributor.authorPekcan, Ö
dc.contributor.authorArda, E
dc.date.accessioned2024-06-12T11:02:03Z
dc.date.available2024-06-12T11:02:03Z
dc.date.issued1999
dc.departmentTrakya Üniversitesien_US
dc.description7th Iketani Conference/International Symposium on Advanced Technology of Fine Particles -- OCT 12-16, 1997 -- YOKOHAMA, JAPANen_US
dc.description.abstractSteady state fluorescence (SSF) and photon transmission methods were used to study void closure and interdiffusion processes during film formation from hard latex particles. Latex films were prepared separately by annealing pyrene (P-y) labeled and unlabeled poly (methyl methacrylate) (PMMA) particles above the glass transition temperature. Direct fluorescence emission of excited pyrene from labeled latex films was monitored as a function of annealing temperature to detect void closure and interdiffusion. The increase in fluorescence intensity against temperature was used to determine the activation energy for viscous flow (Delta H congruent to 47 kcal/mol). The decrease in I-op above the void closure temperature was used to produce the backbone activation energy (Delta E congruent to 44 kcaI/moi) for the interdiffusing chains. Unlabeled PMMA particles were used to prepare films for UW measurements. Transmitted photon intensity from these films increased as the annealing temperature was increased. Monte Carlo simulations were performed for photon transmission through a rectangular lattice. The number of transmitted and scattered photons were calculated as a function of disappeared particle-particle interfaces. The increase in the transmitted photon intensity (I-tr) is attributed to the increase in 'crossing density' at the junction surface. The backbone activation energy (LTE) was measured and found to be around 33 kcal/mol for a diffusing polymer chain across the junction surface. (C) 1999 Elsevier Science B.V. All rights reserved.en_US
dc.description.sponsorshipIketani Sci & Technol Fdn,Polymer Microspheres Symp Comm Japan,Int Polymer Colloids Grpen_US
dc.identifier.doi10.1016/S0927-7757(98)00476-2
dc.identifier.endpage549en_US
dc.identifier.issn0927-7757
dc.identifier.issn1873-4359
dc.identifier.issue1-3en_US
dc.identifier.scopus2-s2.0-0032776353en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage537en_US
dc.identifier.urihttps://doi.org/10.1016/S0927-7757(98)00476-2
dc.identifier.urihttps://hdl.handle.net/20.500.14551/21127
dc.identifier.volume153en_US
dc.identifier.wosWOS:000081847100068en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofColloids And Surfaces A-Physicochemical And Engineering Aspectsen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFluorescenceen_US
dc.subjectPhoton Transmissionen_US
dc.subjectInterdiffusionen_US
dc.subjectVoid Closureen_US
dc.subjectLatexen_US
dc.subjectPolymer-Polymer Interfaceen_US
dc.subjectEnergy-Transferen_US
dc.subjectParticlesen_US
dc.subjectDiffusionen_US
dc.subjectSansen_US
dc.titleVoid closure and interdiffusion in latex film formation by photon transmission and fluorescence methodsen_US
dc.typeConference Objecten_US

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