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dc.contributor.authorYargı, Önder
dc.contributor.authorPekcan, Önder
dc.contributor.authorUğur, Şaziye
dc.date.accessioned2019-06-27T08:02:17Z
dc.date.available2019-06-27T08:02:17Z
dc.date.issued2015
dc.identifier.issn1465-8011
dc.identifier.issn1743-2898
dc.identifier.urihttps://hdl.handle.net/20.500.12469/590
dc.identifier.urihttps://dx.doi.org/10.1179/1743289815Y.0000000010
dc.description.abstractThe diffusion of oxygen into pyrene labelled polystyrene (PS) latex/poly(N-isopropylacrylamide) (PNIPAM) composite films (PS/PNIPAM) was studied based on PS content with the use of fluorescence quenching method. Fluorescence experiments were carried out on composite films containing pyrene as a sensor dye. The Stern-Volmer equation for fluorescence quenching is combined with Fick's law for diffusion to derive mathematical expressions. Diffusion coefficients (D) were produced and found to be decreased with increasing PS content. This decrease was explained with the formation of a tortuous path for diffusing gas molecules which extends the diffusion path of oxygen in the films. In addition at high PS content two different D values were obtained which were attributed to the existence of two different areas in the composite films.
dc.language.isoEnglish
dc.publisherTaylor & Francis Ltd
dc.subjectPS latex
dc.subjectPNIPAM latex
dc.subjectFluorescence
dc.subjectQuenching
dc.subjectOxygen
dc.subjectDiffusion
dc.subjectComposites
dc.subjectFilms
dc.titleMeasurement of oxygen diffusion in PS/PNIPAM films using fluorescence quenching
dc.typeArticle
dc.identifier.startpage189
dc.identifier.endpage196
dc.relation.journalPlastics Rubber And Composites
dc.identifier.issue5
dc.identifier.volume44
dc.identifier.wosWOS:000356333200003
dc.identifier.doi10.1179/1743289815Y.0000000010
dc.contributor.khasauthorPekcan, Önder


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