Kinetics of carbon nanotube-loaded epoxy curing: rheometry, differential scanning calorimetry, and radio frequency heating

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dc.authorid0000-0002-0671-208X
dc.authorid0000-0002-9188-8759
dc.authorid0000-0002-4740-1296
dc.authorid0000-0001-5691-0861
dc.contributor.authorTezel, Güler Bengüsu
dc.contributor.authorSarmah, Anubhav
dc.contributor.authorDesai, Suchi
dc.contributor.authorVashisth, Aniruddh
dc.contributor.authorGreen, Micah J.
dc.date.accessioned2021-06-23T18:57:01Z
dc.date.available2021-06-23T18:57:01Z
dc.date.issued2021
dc.departmentBAİBÜ, Mühendislik Fakültesi, Kimya Mühendisliği Bölümüen_US
dc.description.abstractThe isothermal curing kinetics of carbon nanotube loaded epoxy was investigated using rheometry and differential scanning calorimetry (DSC) at a range of temperatures. Rheo-kinetics was used to observe time-dependent rheological changes in elastic (G?) and viscous (G?) moduli, and complex viscosities of epoxy-CNT samples during isothermal curing. DSC measurements were also performed to monitor the curing reaction, in order to compare against the rheo-kinetic parameters. The Kamal-Sourour kinetic model describes the curing of the epoxy-CNT system for rheo-kinetics and DSC well. The activation energies of the curing reaction were found to be ?36 kJ/mol and ?33 kJ/mol using rheo-kinetics analysis and DSC, respectively. In addition, radio-frequency (RF) electromagnetic fields were used to heat and cure the epoxy-CNT sample; such heating techniques are valuable in a number of epoxy processing technologies. G?, G?, and complex viscosities of RF heated samples were measured to monitor RF-aided curing. This allows us to monitor the curing kinetics inside samples being heated by RF fields; the data indicate that RF-aiding curing is faster than curing rates for samples undergoing curing inside a measurement device such as a rheometer or DSC, because the heat generated is immediate and volumetric.en_US
dc.description.sponsorshipTürkiye Bilimsel ve Teknolojik Araştirma Kurumu, TÜBITAKen_US
dc.description.sponsorshipWe would like to acknowledge the Scientific and Technological Research Council of Turkey (TUBITAK) 2219-International Postdoctoral Research Fellowship Program for Turkish Citizens for their sponsorship. The authors are also grateful to Dr. David Truong at the Soft Matter Facility of TAMU for aiding us in the DSC measurements. Lastly, we would like to acknowledge Muhammad Anas and Dr. Pawan Verma from the Artie McFerrin Department of Chemical Engineering at Texas A&M University for helping us with the DSC analysis and RF setup.en_US
dc.identifier.doi10.1016/j.carbon.2020.12.090
dc.identifier.endpage10en_US
dc.identifier.issn0008-6223
dc.identifier.scopus2-s2.0-85098958170en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1en_US
dc.identifier.urihttps://doi.org/10.1016/j.carbon.2020.12.090
dc.identifier.urihttps://hdl.handle.net/20.500.12491/5118
dc.identifier.volume175en_US
dc.identifier.wosWOS:000626964000001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorTezel, Güler Bengüsu
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofCarbonen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCuring Kineticsen_US
dc.subjectDSCen_US
dc.subjectEpoxy-CNTen_US
dc.subjectRadio Frequency Heatingen_US
dc.subjectRheologyen_US
dc.titleKinetics of carbon nanotube-loaded epoxy curing: rheometry, differential scanning calorimetry, and radio frequency heatingen_US
dc.typeArticleen_US

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