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Revulcanization Kinetics of Waste Tire Rubber Devulcanized by Microwaves: Challenges in Getting Recycled Tire Rubber for Technical Application

dc.contributor.authorDe Sousa, Fabiula Danielli Bastos
dc.contributor.authorZanchet, Aline
dc.contributor.authorOrnaghi Júnior, Heitor Luiz [UNESP]
dc.contributor.authorOrnaghi, Felipe Gustavo
dc.contributor.institutionUniversidade Federal de Pelotas
dc.contributor.institutionUniversidade Federal do ABC (UFABC)
dc.contributor.institutionIMED
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal Do Rio Grande Do sul (UFRGS)
dc.date.accessioned2020-12-12T00:54:57Z
dc.date.available2020-12-12T00:54:57Z
dc.date.issued2019-09-16
dc.description.abstractRecycling is a process toward sustainable development. However, it does not do any good to recycle a material trying to contribute to the environment, if the final properties of the recycled material do not point to a feasible application. In this sense, the purpose of the present study is to evaluate the kinetics parameters of the revulcanization reaction of ground tire rubber (GTR) devulcanized by microwaves using rheological (ODR) and differential scanning calorimetry (DSC) methods. For ODR, torque versus time curves was obtained at 160, 170, 180, 190, and 200 °C and simulated. In general, occurred a decrease in activation energy values upon microwaves exposure time but all the samples showed an autocatalytic model from simulation curves. For DSC, three different models were used: Kissinger, Ozawa, and Flynn-Wall-Ozawa. All of the methods showed a trend to decrease the activation energy by microwave exposure time as noticed in the rheological curves. Among the reasons, the carbon black and the viscosity of the system are the main contributors; the former by radiation tends to oxidize and facilitates the degradation process, and the latter achieves more facility to chain mobility, reducing the activation energy.en
dc.description.affiliationTechnology Development Center Universidade Federal de Pelotas, Rua Gomes Carneiro, 1
dc.description.affiliationCenter of Engineering Modeling and Applied Social Science Universidade Federal Do ABC, Avenida dos Estados, 5001
dc.description.affiliationPolytechnic School of Civil Engineering IMED, Rua Senador Pinheiro 304
dc.description.affiliationFatigue and Aeronautical Material Research Group Universidade Estadual Júlio de Mesquita Filho (UNESP), Rua Dr. Ariberto Pereira da Cunha, 333
dc.description.affiliationPost-Graduate Program in Material Science (PGCIMAT) Institute of Chemistry (IQ) Universidade Federal Do Rio Grande Do sul (UFRGS), Av. Bento Gonçalves 9500
dc.description.affiliationUnespFatigue and Aeronautical Material Research Group Universidade Estadual Júlio de Mesquita Filho (UNESP), Rua Dr. Ariberto Pereira da Cunha, 333
dc.format.extent15413-15426
dc.identifierhttp://dx.doi.org/10.1021/acssuschemeng.9b02904
dc.identifier.citationACS Sustainable Chemistry and Engineering, v. 7, n. 18, p. 15413-15426, 2019.
dc.identifier.doi10.1021/acssuschemeng.9b02904
dc.identifier.issn2168-0485
dc.identifier.scopus2-s2.0-85072553215
dc.identifier.urihttp://hdl.handle.net/11449/197952
dc.language.isoeng
dc.relation.ispartofACS Sustainable Chemistry and Engineering
dc.sourceScopus
dc.subjectDevulcanization
dc.subjectGround tire rubber
dc.subjectKinetics
dc.subjectMicrowaves
dc.subjectRevulcanization
dc.titleRevulcanization Kinetics of Waste Tire Rubber Devulcanized by Microwaves: Challenges in Getting Recycled Tire Rubber for Technical Applicationen
dc.typeArtigopt
dspace.entity.typePublication
unesp.author.orcid0000-0002-5776-2247 0000-0002-5776-2247[1]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia e Ciências, Guaratinguetápt

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