Increased X-ray Attenuation Efficiency of Graphene-Based Nanocomposite

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dc.creatorJuliana Viegas
dc.creatorLiliane A. Silva
dc.creatorAdriana de Souza Medeiros Batista
dc.creatorClascidia A. Furtado
dc.creatorJefferson P. Nascimento
dc.creatorLuiz O. Faria
dc.date.accessioned2023-08-17T20:43:52Z
dc.date.accessioned2025-09-08T23:12:20Z
dc.date.available2023-08-17T20:43:52Z
dc.date.issued2017-09-28
dc.format.mimetypepdf
dc.identifier.issn08885885
dc.identifier.urihttps://hdl.handle.net/1843/57909
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofIndustrial & Engineering Chemistry Research
dc.rightsAcesso Restrito
dc.subjectRaios Gamma
dc.subjectNanocompósitos
dc.subjectTerapia por Raios X
dc.subject.otherGraphene
dc.subject.otherGamma Rays
dc.subject.otherX-Ray Therapy
dc.subject.otherNanocomposite
dc.titleIncreased X-ray Attenuation Efficiency of Graphene-Based Nanocomposite
dc.typeArtigo de periódico
local.citation.epage11790
local.citation.spage11782
local.citation.volume56
local.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.
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://pubs.acs.org/doi/10.1021/acs.iecr.7b02711

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