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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/57909
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dc.creatorJuliana Viegaspt_BR
dc.creatorLiliane A. Silvapt_BR
dc.creatorAdriana de Souza Medeiros Batistapt_BR
dc.creatorClascidia A. Furtadopt_BR
dc.creatorJefferson P. Nascimentopt_BR
dc.creatorLuiz O. Fariapt_BR
dc.date.accessioned2023-08-17T20:43:52Z-
dc.date.available2023-08-17T20:43:52Z-
dc.date.issued2017-09-28-
dc.citation.volume56pt_BR
dc.citation.spage11782pt_BR
dc.citation.epage11790pt_BR
dc.identifier.issn08885885pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/57909-
dc.description.resumoABSTRACT: We report an enhanced X-ray shielding effect related to graphene. The mass attenuation coefficients measured for nanocomposites made of poly(vinylidene fluoride)(PVDF) filled with 1.88 wt % functionalized graphene oxides (GO), pyrolytic graphite (PG), multiwalled carbon nanotubes (MWCNT), and amorphous carbon (soot) have been compared. For 6.9 keV photons, the value measured for graphene-based nanocomposite was found to be four times higher than that encountered for the other graphitic-based nanocomposites. The mass attenuation coefficients were measured for X-ray photons with 6.9, 8.1, 17.5, and 22.1 keV, respectively. Fourier transform infrared data revealed that all graphitic composites casted from solution are in the ferroelectric β-phase of PVDF. It is demonstrated that thin films of ferroelectric PVDF/1.88 wt % GO nanocomposite, with thickness of only 0.1 mm, can attenuate 82.9% and 48.5% of X-ray beams with energies of 6.9 and 8.1 keV, respectively. Thus, lightweight, very thin, and lead free PVDF/GO radiopaque films can be manufactured, offering efficient protection against X-ray radiation for patients and devices in radiology procedures.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.ispartofIndustrial & Engineering Chemistry Research-
dc.rightsAcesso Restritopt_BR
dc.subjectGraphenept_BR
dc.subjectGamma Rayspt_BR
dc.subjectX-Ray Therapypt_BR
dc.subjectNanocompositept_BR
dc.subject.otherRaios Gammapt_BR
dc.subject.otherNanocompósitospt_BR
dc.subject.otherTerapia por Raios Xpt_BR
dc.titleIncreased X-ray Attenuation Efficiency of Graphene-Based Nanocompositept_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://pubs.acs.org/doi/10.1021/acs.iecr.7b02711pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6834-7551pt_BR
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