Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8251506 | Radiation Physics and Chemistry | 2018 | 21 Pages |
Abstract
Composites of unsaturated polyester containing 5Â wt% nanoclay and different amounts of lead monoxide particles (0, 10, 20, and 30Â wt%) were prepared. XRD patterns showed the exfoliation of nanoclay layers in the polymer. Morphological properties of the composites were studied using SEM micrographs. The prepared composites were investigated for their thermal resistance and mechanical properties using thermogravimetric analysis and tensile testing method, respectively. Addition of lead monoxide to the polymer worsened its thermal resistance and tensile properties, whereas the observed negative effects could be moderated by the clay nanoparticle. Gamma attenuation performance of the composites was evaluated by 192Ir, 137Cs, and 60Co gamma radiation sources. Linear attenuation coefficient and mass attenuation coefficient of the composites were found to be increased with the increase of PbO content. Shielding efficiency of the prepared composites was compared with some conventional shielding materials regarding their half value layer thickness. UP/nanoclay/PbO composites were found to be suitable materials for the low-energy gamma radiation shielding applications.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Kobra Bagheri, Seyed Mohammad Razavi, Seyed Javad Ahmadi, Mohammadreza Kosari, Hossein Abolghasemi,