Small molecule desorption prior to dissolution of a polymeric glass

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dc.authorid0000-0002-0082-8209
dc.authorid0000-0003-2876-470X
dc.contributor.authorPekcan, Mehmet Önderen_US
dc.contributor.authorUğur, Şaziyeen_US
dc.date.accessioned2015-01-15T23:00:35Z
dc.date.available2015-01-15T23:00:35Z
dc.date.issued2006-07-15
dc.departmentIşık Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.departmentIşık University, Faculty of Arts and Sciences, Department of Physicsen_US
dc.description.abstractPoly(methyl methacrylate) (PMMA) discs in various molecular weights (M-w) were prepared by free-radical polymerization. Pyrene (Py) was introduced during polymerization as a fluorescence probe. In situ steady state fluorescence experiments were performed to monitor desorption processes in chloroform solvent. When the PMMA discs were in chloroform, desorption of Py molecules were monitored by observing the change of Py fluorescence intensity I-P. To understand the mechanism of desorption, two different experiments were carried out in the meantime. In the first experiment, the weight of swelling and dissolving PMMA discs against dissolution time was monitored. The parallel experiment was conducted by measuring fluorescence intensity I-P from the desorbing Py molecules. Then, a set of desorption experiments were performed by monitoring I-P for various discs with different molecular weight of PMMA. A Fickian diffusion model was employed to quantify the fluorescence data produced from the swelling PMMA discs to measure desorption coefficients D-d. The measured D-d values decrease as the molecular weight of PMMA is increased in the swelling glass.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationPekcan, M. Ö. & Uğur, Ş. (2006). Small molecule desorption prior to dissolution of a polymeric glass. Journal of Applied Polymer Science, 101(2), 908-912. doi:10.1002/app.23980en_US
dc.identifier.doi10.1002/app.23980
dc.identifier.endpage912
dc.identifier.issn0021-8995
dc.identifier.issn1097-4628
dc.identifier.issue2
dc.identifier.scopus2-s2.0-33745172166
dc.identifier.scopusqualityQ2
dc.identifier.startpage908
dc.identifier.urihttps://hdl.handle.net/11729/219
dc.identifier.urihttp://dx.doi.org/10.1002/app.23980
dc.identifier.volume101
dc.identifier.wosWOS:000237753100016
dc.identifier.wosqualityQ2
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.publisherWiley Subscription Services, Inc., A Wiley Companyen_US
dc.relation.ispartofJournal of Applied Polymer Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDesorptionen_US
dc.subjectFluorescenceen_US
dc.subjectPolymer glassen_US
dc.subjectDissolutionen_US
dc.subjectFluorescence techniqueen_US
dc.subjectFilmsen_US
dc.subjectPyreneen_US
dc.subjectDiffusionen_US
dc.subjectModelsen_US
dc.subjectFree radical polymerizationen_US
dc.subjectMathematical modelsen_US
dc.subjectSwellingen_US
dc.subjectMolecular weighten_US
dc.subjectPolymerizationen_US
dc.subjectPolymethyl methacrylateen_US
dc.subjectSolventen_US
dc.subjectDissolution timeen_US
dc.subjectFluorescence intensityen_US
dc.subjectFluorescence probesen_US
dc.subjectPolymeric glassen_US
dc.titleSmall molecule desorption prior to dissolution of a polymeric glassen_US
dc.typeArticleen_US
dspace.entity.typePublication

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