Investigation of polymer-based BaO and rGO nanocomposites for application in low energy X ray attenuation

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dc.creatorLiliane Aparecida Silva
dc.creatorAdriana de Souza Medeiros Batista
dc.creatorJefferson Nascimentoc
dc.creatorClascidia Furtadoc
dc.creatorLuiz Faria
dc.date.accessioned2023-08-18T20:12:25Z
dc.date.accessioned2025-09-08T22:59:22Z
dc.date.available2023-08-18T20:12:25Z
dc.date.issued2019-04-22
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.15392/bjrs.v7i2B.431
dc.identifier.issn2319-0612
dc.identifier.urihttps://hdl.handle.net/1843/57947
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofBrazilian Journal of Radiation Sciences
dc.rightsAcesso Aberto
dc.subjectNacompósitos
dc.subjectRaio X
dc.subject.otherBaO
dc.subject.otherrGO nanocomposites
dc.subject.otherX-ray Attenuation
dc.titleInvestigation of polymer-based BaO and rGO nanocomposites for application in low energy X ray attenuation
dc.typeArtigo de periódico
local.citation.epage15
local.citation.issue2B
local.citation.spage1
local.citation.volume7
local.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.
local.identifier.orcidhttps://orcid.org/0000-0001-6834-7551
local.publisher.countryBrasil
local.publisher.departmentMED - DEPARTAMENTO DE ANATOMIA E IMAGEM
local.publisher.initialsUFMG
local.url.externahttps://www.bjrs.org.br/revista/index.php/REVISTA/article/view/431

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