Drying of polyacrylamide-multiwalled carbon nanotube (MWNT) composites with various MWNTs contents: a fluorescence study

dc.contributor.authorEvingür, Gülşen Akin
dc.contributor.authorPekcan, Önder
dc.date.accessioned2019-06-27T08:03:42Z
dc.date.available2019-06-27T08:03:42Z
dc.date.issued2013
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractWe studied the drying of polyacrylamide (PAAm)-multiwalled carbon nanotube (MWNT) composites prepared by free radical crosslinking copolymerization in water with a steady state fluorescence technique. Composite gels were prepared at room temperature with pyranine (Py) doped as a fluorescence probe. Drying experiments were performed in air at various MWNT contents by real time monitoring of the Py fluorescence intensity (I) which increased as the drying proceeded. The Stern-Volmer equation combined with the moving boundary diffusion model was used to explain the behavior of I during drying. It was observed that the desorption coefficient (D) increased as the temperature increased. Drying energies (Delta E) were measured for the drying processes for each MWNT content gel by using fluorescence gravimetrical and volumetric methods. It is understood that Delta E values decrease by increasing MWNT content until 1 wt % MWNT and then increase above the level of this threshold value. The energy of drying is strongly correlated with the MWNT content in the composite. Delta E drops to its lowest value at which conducting cluster starts to appear.en_US]
dc.identifier.citation4
dc.identifier.doi10.1515/polyeng-2012-0128en_US
dc.identifier.endpage39
dc.identifier.issn0334-6447en_US
dc.identifier.issn0334-6447
dc.identifier.issue1
dc.identifier.scopus2-s2.0-84881658264en_US
dc.identifier.scopusqualityN/A
dc.identifier.startpage33en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/828
dc.identifier.urihttps://doi.org/10.1515/polyeng-2012-0128
dc.identifier.volume33en_US
dc.identifier.wosWOS:000322967400004en_US
dc.identifier.wosqualityN/A
dc.institutionauthorPekcan, Önderen_US
dc.language.isoenen_US
dc.publisherWalter De Gruyter Gmbhen_US
dc.relation.journalJournal Of Polymer Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAcrylamideen_US
dc.subjectDryingen_US
dc.subjectFluorescenceen_US
dc.subjectMultiwalled carbon nanotube (MWNT)en_US
dc.subjectTemperatureen_US
dc.titleDrying of polyacrylamide-multiwalled carbon nanotube (MWNT) composites with various MWNTs contents: a fluorescence studyen_US
dc.typeArticleen_US
dspace.entity.typePublication

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