LDPE/Bismuth Oxide Nanocomposite: Preparation, Characterization and Application in X-ray Shielding

被引:36
作者
Alshahri, Saad [1 ]
Alsuhybani, Mohammed [1 ]
Alosime, Eid [1 ]
Almurayshid, Mansour [1 ]
Alrwais, Alhanouf [1 ]
Alotaibi, Salha [1 ]
机构
[1] King Abdulaziz City Sci & Technol, Nucl Sci Res Inst, Riyadh 11442, Saudi Arabia
关键词
polymeric nanocomposite; LDPE; Bi2O3; radiation shielding; attenuation of X-ray radiation; HIGH-DENSITY POLYETHYLENE; POLYMER COMPOSITES; RADIATION; NANOPARTICLES; MICRO; BI2O3; WO3;
D O I
10.3390/polym13183081
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Recently developed polymer-based composites could prove useful in many applications such as in radiation shielding. In this work, the potential of a bismuth oxide (Bi2O3) nanofiller based on an LDPE polymer was developed as lead-free X-ray radiation shielding offering the benefits of lightness, low-cost and non-toxic compared to pure lead. Three different LDPE-based composites were prepared with varying weight percentages of Bi2O3: 5%, 10% and 15%. The characterizations were extended to include structural properties, physical features, mechanical and thermal properties, and radiation shielding efficiency for the prepared nanocomposites. The results revealed that the incorporation of the Bi2O3 nanofiller into an LDPE improved the density of the composites. There was also a slight increase in the tensile strength and tensile modulus. In addition, there was a clear improvement in the efficiency of the shield when fillers were added to the LDPE polymer. The LDPE + Bi2O3 (15%) composite needed the lowest thickness to attenuate 50% of the incident X-rays. The LDPE + Bi2O3 (15%) polymer can also block around 80% of X-rays at 47.9 keV. In real practice, a thicker shield of the proposed composite materials, or a higher percentage of the filler could be employed to safely ensure the radiation is blocked.
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页数:15
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