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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/57947
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dc.creatorLiliane Aparecida Silvapt_BR
dc.creatorAdriana de Souza Medeiros Batistapt_BR
dc.creatorJefferson Nascimentocpt_BR
dc.creatorClascidia Furtadocpt_BR
dc.creatorLuiz Fariapt_BR
dc.date.accessioned2023-08-18T20:12:25Z-
dc.date.available2023-08-18T20:12:25Z-
dc.date.issued2019-04-22-
dc.citation.volume7pt_BR
dc.citation.issue2Bpt_BR
dc.citation.spage1pt_BR
dc.citation.epage15pt_BR
dc.identifier.doihttps://doi.org/10.15392/bjrs.v7i2B.431pt_BR
dc.identifier.issn2319-0612pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/57947-
dc.description.resumoPolymeric materials can serve as a matrix for the dispersion of nanomaterials with good attenuation features, resulting in lightweight, conformable, flexible, lead-free and easy-to-process materials. Thus, some well-known radiation shielding materials could be used in low proportion as a filler, for the formation of new materials. On the other hand, nanostructured carbon materials, such as graphene oxide (GO) have been reported recently to show enhanced attenua tion properties. For the present work, poly(vinylidene fluoride) [PVDF] homopolymers and its fluorinated copolymers were filled with metallic oxides and nanosized reduced graphene oxides (rGO) in order to produce nanocomposites with increased low energy X-ray attenuation efficiency. This work aims to investigate the X-ray shielding features of multilayered PVDF/rGO and P(VDF-TrFE)/BaO composites. PVDF/rGO overlapped with P(VDF-TrFE)/BaO thin films were sandwiched between two layers of kapton films of different thickness. The linear attenuation coefficients were measured for monochromatic X-ray photons with energy of 8.1 keV. The samples were characterized by Scan ning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Ultraviolet–visible (UV-vis) and FourierTransform Infrared (FTIR) Spectroscopy. The linear attenuation coefficient of the multilayered sample was evaluated and compared with the linear attenuation of the individual constituents. It was observed an increase in the attenuation coefficient of the overlapping samples. It is demonstrated that thin films of rGO nanocomposite with thickness of only 0.32 mm can attenuate up to 50% of X-ray beams with energy of 8.1 keV, justifying further investigation of these nanocomposites as X-ray or gamma radiation attenuators.pt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentMED - DEPARTAMENTO DE ANATOMIA E IMAGEMpt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofBrazilian Journal of Radiation Sciences-
dc.rightsAcesso Abertopt_BR
dc.subjectBaOpt_BR
dc.subjectrGO nanocompositespt_BR
dc.subjectX-ray Attenuationpt_BR
dc.subject.otherNacompósitospt_BR
dc.subject.otherRaio Xpt_BR
dc.titleInvestigation of polymer-based BaO and rGO nanocomposites for application in low energy X ray attenuationpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.bjrs.org.br/revista/index.php/REVISTA/article/view/431pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6834-7551pt_BR
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