Kinetic models for the dynamical behavior of polyacrylamide (PAAm)-kappa-carrageenan (kappa C) composite gels

dc.contributor.authorEvingür, Gülşen Akın
dc.contributor.authorPekcan, Önder
dc.date.accessioned2019-06-27T08:02:40Z
dc.date.available2019-06-27T08:02:40Z
dc.date.issued2015
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractA fluorescence method was employed for studying the drying and swelling of PAAm-kappa C composite gels which were formed from acrylamide (AAm) and N N'- methylenebisacrylamide (BIS) with various kappa-carrageenan (kappa C) contents by free radical crosslinking copolymerization in water. Composite gels were prepared at 80 A degrees C with pyranine (Py) as a fluorescence probe. Scattered light I (sc) and fluorescence emission intensities I (em) were monitored during drying and swelling of these gels. The fluorescence intensity of pyranine increased and decreased as drying and swelling time are increased respectively for all gel samples. The Stern-Volmer equation combined with moving boundary and Li-Tanaka models were used to explain the behavior of I (em) during drying and swelling processes respectively. It is found that the desorption coefficient D (d) decreased as kappa C contents were increased for a given temperature during drying. However the cooperative diffusion coefficient D (s) presented exactly the opposite case. Conventional gravimetrical and volumetric experiments were also carried out during drying and swelling of PAAm-kappa C composite gels. It was observed that D (d) and D (s) values measured with the fluorescence method were found to be much larger than they were measured with the conventional methods.en_US]
dc.identifier.citation3
dc.identifier.doi10.1007/s10867-014-9364-xen_US
dc.identifier.endpage47
dc.identifier.issn0092-0606en_US
dc.identifier.issn1573-0689en_US
dc.identifier.issn0092-0606
dc.identifier.issn1573-0689
dc.identifier.issue1
dc.identifier.pmid25304224en_US
dc.identifier.scopus2-s2.0-84921373331en_US
dc.identifier.scopusqualityQ3
dc.identifier.startpage37en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/662
dc.identifier.urihttps://doi.org/10.1007/s10867-014-9364-x
dc.identifier.volume41en_US
dc.identifier.wosWOS:000348188200004en_US
dc.identifier.wosqualityN/A
dc.institutionauthorPekcan, Önderen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.journalJournal of Biological Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAcrylamideen_US
dc.subjectCompositeen_US
dc.subjectCarrageenanen_US
dc.subjectFluorescenceen_US
dc.subjectDryingen_US
dc.subjectSwellingen_US
dc.titleKinetic models for the dynamical behavior of polyacrylamide (PAAm)-kappa-carrageenan (kappa C) composite gelsen_US
dc.typeArticleen_US
dspace.entity.typePublication

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