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http://hdl.handle.net/1843/57909| Tipo: | Artigo de Periódico |
| Título: | Increased X-ray Attenuation Efficiency of Graphene-Based Nanocomposite |
| Autor(es): | Juliana Viegas Liliane A. Silva Adriana de Souza Medeiros Batista Clascidia A. Furtado Jefferson P. Nascimento Luiz O. Faria |
| Resumo: | ABSTRACT: 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. |
| Assunto: | Raios Gamma Nanocompósitos Terapia por Raios X |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | MED - DEPARTAMENTO DE ANATOMIA E IMAGEM |
| Tipo de Acesso: | Acesso Restrito |
| URI: | http://hdl.handle.net/1843/57909 |
| Data do documento: | 28-Set-2017 |
| metadata.dc.url.externa: | https://pubs.acs.org/doi/10.1021/acs.iecr.7b02711 |
| metadata.dc.relation.ispartof: | Industrial & Engineering Chemistry Research |
| Aparece nas coleções: | Artigo de Periódico |
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