Gelation of PAAm-PVP composites: A fluorescence study

dc.contributor.authorEvingür, Gülşen Akin
dc.contributor.authorKaygusuz, Hakan
dc.contributor.authorErim, F. Bedia
dc.contributor.authorPekcan, Önder
dc.date.accessioned2019-06-27T08:02:52Z
dc.date.available2019-06-27T08:02:52Z
dc.date.issued2014
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractHybrid hydrogels are a new class of composite materials. Polyacrylamide (PAAm) hydrogels are mainly produced by free radical crosslinking copolymerization (FCC) of AAm in the presence of N N'-methylene bis (acrylamide) (BIS) as the crosslinker. Pyranine doped PAAm-poly (N-vinyl pyrrolidone) (PVP) composite were prepared with different amounts of PVP varying in the range between 0.0015 and 0.1 gr. It was observed that pyranine molecules as a fluoroprobe bind to AAm and PVP chains upon the initiation of the polymerization causing the fluorescence spectra of the bonded pyranines shift to the shorter wavelengths. The sol-gel phase transition and its universality were monitored and tested as a function of PVP contents. Observations around the critical point show that the gel fraction exponent beta agreed with the percolation result for below 0.025 gr PVP contents. However classical result was observed above 0.0125 gr PVP content.en_US]
dc.identifier.citation2
dc.identifier.doi10.1142/S0217979214501227en_US
dc.identifier.issn0217-9792en_US
dc.identifier.issn1793-6578en_US
dc.identifier.issn0217-9792
dc.identifier.issn1793-6578
dc.identifier.issue20
dc.identifier.scopus2-s2.0-84903391081en_US
dc.identifier.scopusqualityQ3
dc.identifier.urihttps://hdl.handle.net/20.500.12469/701
dc.identifier.urihttps://doi.org/10.1142/S0217979214501227
dc.identifier.volume28en_US
dc.identifier.wosWOS:000337807000002en_US
dc.identifier.wosqualityN/A
dc.institutionauthorPekcan, Önderen_US
dc.language.isoenen_US
dc.publisherWorld Scientificen_US
dc.relation.journalInternational Journal of Modern Physics Ben_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAcrylamideen_US
dc.subjectPoly (N-vinyl pyrolidone)en_US
dc.subjectComposite gelen_US
dc.subjectPercolationen_US
dc.subjectCritical phenomenaen_US
dc.subjectFluorescenceen_US
dc.titleGelation of PAAm-PVP composites: A fluorescence studyen_US
dc.typeArticleen_US
dspace.entity.typePublication

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