Introducing a novel low energy gamma ray shield utilizing Polycarbonate Bismuth Oxide composite

Autor:	Seyed Mohsen Saleh Kotahi, Rojin Mehrara, Shahryar Malekie, Sedigheh Kashian
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	Materials science Science Composite number chemistry.chemical_element 02 engineering and technology 010403 inorganic & nuclear chemistry 01 natural sciences Article Bismuth Matrix (chemical analysis) Nanoscience and technology Composite material Polycarbonate Multidisciplinary Attenuation 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry visual_art Attenuation coefficient visual_art.visual_art_medium Medicine 0210 nano-technology Dispersion (chemistry) Glass transition
Zdroj:	Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021) Scientific Reports
ISSN:	2045-2322
Popis:	The fabrication of different weight percentages of Polycarbonate-Bismuth Oxide composite (PC-Bi2O3), namely 0, 5, 10, 20, 30, 40, and 50 wt%, was done via the mixed-solution method. The dispersion state of the inclusions into the polymeric matrix was studied through XRD and SEM analyses. Also, TGA and DTA analyses were carried out to investigate the thermal properties of the samples. Results showed that increasing the amount of Bi2O3 into the polymer matrix shifted the glass transition temperature of the composites towards the lower temperatures. Then, the amount of mass attenuation coefficients of the samples were measured using a CsI(Tl) detector for different gamma rays of 241Am, 57Co, 99mTc, and 133Ba radioactive sources. It was obtained that increasing the concentration of the Bi2O3 fillers in the polycarbonate matrix resulted in increasing the attenuation coefficients of the composites significantly. The attenuation coefficient was enhanced twenty-three times for 50 wt% composite in 59 keV energy, comparing to the pure polycarbonate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a086db54c7fdd6d1530ba557690ff38 https://doaj.org/article/d95cfed9186d47a9a94c851de5b6102f Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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