Temperature Effect on the Swelling of Paam-Kappa Composites

dc.contributor.author Evingür, Gülşen Akin
dc.contributor.author Pekcan, Mehmet Önder
dc.contributor.author Pekcan, Önder
dc.contributor.other Molecular Biology and Genetics
dc.date.accessioned 2019-06-27T08:04:09Z
dc.date.available 2019-06-27T08:04:09Z
dc.date.issued 2012
dc.department Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümü en_US
dc.description.abstract The steady-state fluorescence (SSF) technique was used for studying swelling of disc-shaped polyacrylamide (PAAm)-kappa-carrageenan (kappa C) composites which were prepared by free-radical crosslinking copolymerization at 80 degrees C. Pyranine was introduced as a fluorescence probe during polymerization. Swelling experiments were performed in water at various temperatures by real-time monitoring of the pyranine (Py) fluorescence intensity I which decreased as swelling proceeded. Stern-Volmer equation is modified for low quenching efficiencies to interpret the behavior of Py intensity during the swelling of PAAm-kappa C composites. The Li-Tanaka equation was used to determine the swelling time constants tau(1) and cooperative diffusion coefficients D(0) from fluorescence intensity weight and volume variations of the composites at various temperatures. It was observed that tau(1) first decreased up to 40 degrees C and then increased en_US]
dc.description.abstract naturally D0 increased up to 40 degrees C and then decrease for all kappa C content gels. Swelling activation energies DE were measured for the swelling composites which are found to be exothermic and endothermic in between 30-40 and 40-60 degrees C respectively. (C) 2011 Wiley Periodicals Inc. J Appl Polym Sci 123: 1746-1754 2012 en_US]
dc.identifier.citationcount 6
dc.identifier.doi 10.1002/app.34632 en_US
dc.identifier.endpage 1754
dc.identifier.issn 0021-8995 en_US
dc.identifier.issn 0021-8995
dc.identifier.issue 3
dc.identifier.scopus 2-s2.0-80255127362 en_US
dc.identifier.scopusquality Q2
dc.identifier.startpage 1746 en_US
dc.identifier.uri https://hdl.handle.net/20.500.12469/899
dc.identifier.uri https://doi.org/10.1002/app.34632
dc.identifier.volume 123 en_US
dc.identifier.wos WOS:000296862700054 en_US
dc.institutionauthor Pekcan, Önder en_US
dc.language.iso en en_US
dc.publisher Wiley-Blackwell en_US
dc.relation.journal Journal Of Applied Polymer Science en_US
dc.relation.publicationcategory Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı en_US
dc.rights info:eu-repo/semantics/openAccess en_US
dc.scopus.citedbyCount 6
dc.subject Swelling en_US
dc.subject Fluorescence en_US
dc.subject Polyacrylamide en_US
dc.subject Kappa-carrageenan en_US
dc.subject Composite en_US
dc.subject Hydrogels en_US
dc.title Temperature Effect on the Swelling of Paam-Kappa Composites en_US
dc.type Article en_US
dc.wos.citedbyCount 6
dspace.entity.type Publication
relation.isAuthorOfPublication e5459272-ce6e-44cf-a186-293850946f24
relation.isAuthorOfPublication.latestForDiscovery e5459272-ce6e-44cf-a186-293850946f24
relation.isOrgUnitOfPublication 71ce8622-7449-4a6a-8fad-44d881416546
relation.isOrgUnitOfPublication.latestForDiscovery 71ce8622-7449-4a6a-8fad-44d881416546

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