Monitoring the gelation of polyacrylamide-sodium alginate composite by fluorescence technique

dc.contributor.authorEvingür, Gülşen Akin
dc.contributor.authorTezcan, Filiz
dc.contributor.authorErim, F. Bedia
dc.contributor.authorPekcan, Önder
dc.date.accessioned2019-06-27T08:04:27Z
dc.date.available2019-06-27T08:04:27Z
dc.date.issued2012
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractPolyacrylamide (PAAm)-sodium alginate (SA) composite was prepared with different amounts of SA varying in the range between 0.06% and 2% (w/v). The PAAm-SA composite was characterized by the steady-state fluorescence technique. Pyranine was added as a fluoroprobe for monitoring the polymerization. It was observed that pyranine molecules bind to AAm and SA chains upon the initiation of the polymerization. Thus the fluorescence spectra of the bonded pyranines shift to the shorter wavelengths. Fluorescence spectra from the bonded pyranines allowed us to monitor the sol-gel phase transition and to test the universality of the sol-gel transition as a function of SA contents. Observations around the critical point show that the gel fraction exponent beta and the weight average degree of polymerization exponent gamma agreed with the percolation result for (<0.25% (w/v)) SA contents. However classical results were produced at (<2% (w/v)) SA contents.en_US]
dc.identifier.citation16
dc.identifier.doi10.1080/01411594.2011.629363en_US
dc.identifier.endpage541
dc.identifier.issn0141-1594en_US
dc.identifier.issn0141-1594
dc.identifier.issue6
dc.identifier.scopus2-s2.0-84862201485en_US
dc.identifier.scopusqualityN/A
dc.identifier.startpage530en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/941
dc.identifier.urihttps://doi.org/10.1080/01411594.2011.629363
dc.identifier.volume85en_US
dc.identifier.wosWOS:000304424400007en_US
dc.identifier.wosqualityN/A
dc.institutionauthorPekcan, Önderen_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Ltden_US
dc.relation.journalPhase Transitionsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSodium alginateen_US
dc.subjectAcrylamideen_US
dc.subjectUniversalityen_US
dc.subjectCritical phenomenaen_US
dc.subjectFluorescenceen_US
dc.titleMonitoring the gelation of polyacrylamide-sodium alginate composite by fluorescence techniqueen_US
dc.typeArticleen_US
dspace.entity.typePublication

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