Photon transmission technique for monitoring formation and swelling of polyacrylamide gels

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dc.authoridPEKCAN, Onder/0000-0002-0082-8209
dc.authorwosidPEKCAN, Onder/Y-3158-2018
dc.contributor.authorPekcan, Ö
dc.contributor.authorKara, S
dc.date.accessioned2024-06-12T11:12:21Z
dc.date.available2024-06-12T11:12:21Z
dc.date.issued2002
dc.departmentTrakya Üniversitesien_US
dc.description.abstractThe in situ, real-time photon transmission technique was used to monitor the free radical crosslinking copolymerization of acrylamide and N,N'-methylenebisacrylamide (Bis). Gelation experiments were performed with various Bis contents at various wavelengths. It was observed that the transmitted photon intensity, I-tr decreased dramatically at a certain reaction time, which is attributed to the increase in scattered light intensity, I-sc during the formation of microgels in the system. The increase in I-sc was modeled using Rayleigh's equation where the reaction time was found to be proportional to the volume of the microgels. The disc-shaped polyacrylamide (PAAm) gels were dried before use during swelling experiments. Transmitted light intensity, I-tr, from the gel increased at initial stages when PAAm gels were immersed in water and then decreased exponentially as the swelling time increased. Decrease in I-tr was attributed to the lattice heterogeneities, which might have originated between microgels and holes in the swelling gel. Decrease in I-tr was modeled using the Li-Tanaka equation from which cooperative diffusion coefficients, D-c, were determined for gels of various Bis contents. It is observed that the D-c values increased with the Bis content.en_US
dc.identifier.doi10.1081/PPT-120004369
dc.identifier.endpage588en_US
dc.identifier.issn0360-2559
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-0036611734en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage573en_US
dc.identifier.urihttps://doi.org/10.1081/PPT-120004369
dc.identifier.urihttps://hdl.handle.net/20.500.14551/23144
dc.identifier.volume41en_US
dc.identifier.wosWOS:000176483500012en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherMarcel Dekker Incen_US
dc.relation.ispartofPolymer-Plastics Technology And Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPhoton Transmissionen_US
dc.subjectSwellingen_US
dc.subjectMicrogelsen_US
dc.subjectDiffusion Coefficienten_US
dc.subjectVolume Phase-Transitionen_US
dc.subjectCross-Linker Contentsen_US
dc.subjectReal-Timeen_US
dc.subjectInhomogeneitiesen_US
dc.subjectNetworksen_US
dc.subjectKineticsen_US
dc.titlePhoton transmission technique for monitoring formation and swelling of polyacrylamide gelsen_US
dc.typeArticleen_US

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