Uğur, ŞaziyePekcan, Mehmet Önder2015-01-152015-01-152005-11-15Uğur, Ş. & Pekcan, M. Ö. (2005). Film formation from pure and mixed latices; transient fluorescence study. Journal of Colloid and Interface Science, 291(2), 405-410. doi:10.1016/j.jcis.2005.05.0150021-97971095-7103https://hdl.handle.net/11729/169http://dx.doi.org/10.1016/j.jcis.2005.05.015A fast transient fluorescence technique was used to study latex film formation induced by organic solvent vapor. Mixtures of pyrene (P)- and naphthalene (N)-labeled and/or pure naphthalene-labeled latex films were prepared separately from poly(methyl methacrylate) (PMMA) particles. Then these pure and mixed latex films were exposed to vapor of various chloroform-heptane mixtures in seven different experiments. In both films, fluorescence lifetimes from N were monitored during vapor-induced film formation. It was observed that N lifetimes decreased as the vapor exposure time is increased. A Stern-Volmer kinetic analysis was used for low quenching efficiencies to interpret the decrease in N lifetimes. A Prager-Tirrell model was employed to obtain back-and-forth frequencies, v, of reptating PMMA chains during latex film formation induced by solvent vapor. In both pure and mixed latex films, v values were found to be correlated with the chloroform content in the vapor mixture. It was observed that polymer interdiffusion obeyed a t(1/2) law during film formation.eninfo:eu-repo/semantics/closedAccessT latex-particlesPolymer-polymer interfaceEnergy-transferMolecular-weightColloidsInterdiffusionDiffusionDispersionsLuminescencePhoton transmissionAromatic compoundsCrystal latticesFluorescenceLatexesMixturesOrganic solventsPolymethyl methacrylatesChlorine compoundsEstersNaphthaleneFast transient fluorescence techniquesFluorescence lifetimesFluorescence studiesKinetic analysisLatex film formationsOrganic solvent vaporsPoly(methyl methacrylate) (PMMA)Quenching efficiencyChloroformHeptaneLatexPoly(methyl methacrylate)PolymerPyreneAnalytic methodChemical labelingcorrelation analysisDiffusionExperimentExposureFilmKineticsMathematical modelMonitoringPhotochemical efficiencyPhotochemical quenchingPriority journalVaporLatex filmsVapor mixturesFilm preparationArticle2912405410Q1WOS:000232815500012160093722-s2.0-26444532877Q1