Study on critical behaviour in N-isopropyl acrylamide gels by using fluorescence technique

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dc.authorid0000-0003-2352-9129
dc.authorid0000-0002-0082-8209
dc.contributor.authorKaya Aktaş, Demeten_US
dc.contributor.authorPekcan, Mehmet Önderen_US
dc.date.accessioned2015-01-15T23:00:34Z
dc.date.available2015-01-15T23:00:34Z
dc.date.issued2006-11
dc.departmentIşık Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.departmentIşık University, Faculty of Arts and Sciences, Department of Physicsen_US
dc.description.abstractThe steady state fluorescence (SSF) technique was used to study the sol-gel transition for the solution free radical crosslinking copolymerization of N-isopropyl acrylamide (NIPA), with N,N'-methylenebis (acrylamide) (BIS) as crosslinker in the presence of ammonium persulfate (APS) as an initiator. Pyranine (8-hydroxypyrene-1,3,6-trisulfonic acid, trisodium salt, HPTS) was used as a floroprobe for monitoring the polymerization. Pyranine molecules start to bind to NIPA polymer chains upon the initiation of the polymerization, thus the spectra of the bonded pyranines shift to the shorter wavelengths. The get fraction exponent beta and the weight average degree of polymerization exponent gamma' agree best with the mean-field (Flory-Stockmayer) results near the gel point for various crosslinker contents.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationKaya Aktaş, D. & Pekcan, M. Ö. (2006). Study on critical behaviour in N -isopropyl acrylamide gels by using fluorescence technique. Phase Transitions, 79(11), 921-933. doi:10.1080/01411590600970728en_US
dc.identifier.doi10.1080/01411590600970728
dc.identifier.endpage933
dc.identifier.issn0141-1594
dc.identifier.issn1029-0338
dc.identifier.issue1
dc.identifier.scopus2-s2.0-34547371821
dc.identifier.scopusqualityQ3
dc.identifier.startpage921
dc.identifier.urihttps://hdl.handle.net/11729/209
dc.identifier.urihttp://dx.doi.org/10.1080/01411590600970728
dc.identifier.volume79
dc.identifier.wosWOS:000243586600006
dc.identifier.wosqualityQ3
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.publisherTaylor & Francis Groupen_US
dc.relation.ispartofPhase Transitionsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCritical exponentsen_US
dc.subjectPyranineen_US
dc.subjectFluorescenceen_US
dc.subjectMean-fielden_US
dc.subjectGel pointen_US
dc.subjectVolume-phase-transitionen_US
dc.subjectMolecular-size distributionen_US
dc.subjectGlass-transitionen_US
dc.subjectCritical-pointen_US
dc.subjectPolymer gelsen_US
dc.subjectPercolationen_US
dc.subjectDynamicsen_US
dc.subjectCopolymerizationen_US
dc.subjectFluorescence spectroscopyen_US
dc.subjectMean field theoryen_US
dc.subjectSol-gel processen_US
dc.subjectFloroprobesen_US
dc.subjectGel fraction exponentsen_US
dc.subjectGel pointsen_US
dc.subjectPolyacrylatesen_US
dc.titleStudy on critical behaviour in N-isopropyl acrylamide gels by using fluorescence techniqueen_US
dc.typeArticleen_US
dspace.entity.typePublication

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