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首页> 外文期刊>Journal of Applied Polymer Science >Poly(vinyl alcohol)-bismuth oxide composites for X-ray and gamma-ray shielding applications
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Poly(vinyl alcohol)-bismuth oxide composites for X-ray and gamma-ray shielding applications

机译：聚（乙烯醇） - 用于X射线和伽马射线屏蔽应用的氧化物复合材料

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摘要

Polymer composites, which are light in weight, cost effective, and less toxic, have potential applications in X-ray and gamma-ray shielding and protection. In this work, we have explored the efficacy of poly(vinyl alcohol)-bismuth oxide composites as radiation shielding materials. Poly(vinyl alcohol) composites with different wt % (0-50) of bismuth were prepared by a simple solution casting technique. Structural and thermal characterization of these samples was carried out using Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). TGA revealed the enhanced thermal stability of these composites. AC conductivity measurements and optical spectroscopy were used to analyze their electrical behavior. The composites showed low conductivity, and the energy gap obtained also showed their tendency to be insulators. The radiation attenuation properties were investigated using X-ray (5.895 and 6.490 keV) and gamma-ray (59.54 and 662 keV) transmission measurements. The shielding efficiency of the composites increased with filler wt %. The 40 wt % composites exhibited mass attenuation coefficients of 122.68 and 93.02 cm(2)/g at photon energies of 5.895 and 6.490 keV, respectively, while the 50 wt % composites showed 1.57 and 0.092 cm(2)/g at photon energies of 59.54 and 662 keV, respectively. The effective atomic number quantifies the probability of interaction of radiation with matter. The effective atomic number of the composites calculated by the direct method was in good agreement with the theoretical value obtained from Auto-Zeff software. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47949.
机译：聚合物复合材料，其重量轻，成本效益，毒性较小，具有X射线和伽马射线屏蔽和保护的潜在应用。在这项工作中，我们探讨了聚（乙烯醇） - 氧化物复合材料作为辐射屏蔽材料的疗效。通过简单的溶液铸造技术制备具有不同WT％（0-50）铋的聚（乙烯醇）复合材料。使用傅里叶变换红外光谱，X射线衍射，扫描电子显微镜（SEM）和热重分析（TGA）进行这些样品的结构和热表征。 TGA揭示了这些复合材料的增强的热稳定性。 AC电导率测量和光学光谱用于分析其电气行为。复合材料显示出低导电性，并且所获得的能隙也显示出它们的绝缘体倾向。使用X射线（5.895和6.490keV）和γ射线（59.54和662keV）透射测量来研究辐射衰减性能。复合材料的屏蔽效率随填料WT％而增加。 40wt％复合材料分别在5.895和6.490kev的光子能量下表现出122.68和93.02cm（2）/ g的质量衰减系数，而50wt％复合材料在光子能量下显示为1.57和0.092cm（2）/ g分别为59.54和662 kev。有效原子序数量化了辐射相互作用的概率。通过直接方法计算的复合材料的有效原子序数与自动Zeff软件获得的理论值吻合良好。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47949。

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