A Fluorescence Study on Swelling of Hydrogels (PAAm) at Various Cross-Linker Contents

dc.contributor.authorAktas, Demet Kaya
dc.contributor.authorEvingür, Gülşen Akin
dc.contributor.authorPekcan, Önder
dc.date.accessioned2019-06-27T08:05:32Z
dc.date.available2019-06-27T08:05:32Z
dc.date.issued2009
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractDisk-shaped acrylamide (AAm) gels were prepared from AAm with various NN'-methylenebisacrylamide (Bis) contents as cross-linker in the presence of ammonium persulfate as an initiator by free-radical cross-linking copolymerization in water. Polyacrylamide (PAAm) gels were dried before using for swelling experiments. Steady-state fluorescence spectrometer was employed during the swelling of PAAm hydrogels in water. Pyranine was introduced as a fluorescence probe. Fluorescence intensity of pyranine from various Bis content gel samples was measured during in situ swelling process. It was observed that fluorescence intensity decreased as swelling has proceeded. Gravimetric and volumetric experiments were also performed. The Li-Tanaka equation was used to determine the swelling time constants tau(c) and cooperative diffusion coefficients D-c from intensity weight and volume variations during the swelling processes. It was observed that swelling time constants tau(c) increased and diffusion coefficients D-c decreased as the cross-linker content was increased. (C) 2010 Wiley Periodicals Inc. Adv Polym Techn 28:215-223 2009en_US]
dc.description.abstractPublished online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/adv.20163en_US]
dc.identifier.citation15
dc.identifier.doi10.1002/adv.20163en_US
dc.identifier.endpage223
dc.identifier.issn0730-6679en_US
dc.identifier.issn1098-2329en_US
dc.identifier.issn0730-6679
dc.identifier.issn1098-2329
dc.identifier.issue4
dc.identifier.scopus2-s2.0-75149172778en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage215en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/1087
dc.identifier.urihttps://doi.org/10.1002/adv.20163
dc.identifier.volume28en_US
dc.identifier.wosWOS:000274112400001en_US
dc.identifier.wosqualityN/A
dc.institutionauthorPekcan, Önderen_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.journalAdvances in Polymer Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectDiffusionen_US
dc.subjectFluorescenceen_US
dc.subjectHydrogelsen_US
dc.subjectSwellingen_US
dc.titleA Fluorescence Study on Swelling of Hydrogels (PAAm) at Various Cross-Linker Contentsen_US
dc.typeArticleen_US
dspace.entity.typePublication

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