Journal
POLISH JOURNAL OF MEDICAL PHYSICS AND ENGINEERING
Volume 26, Issue 2, Pages 77-85Publisher
SCIENDO
DOI: 10.2478/pjmpe-2020-0009
Keywords
radiation shielding; tungsten filled polyvinyl alcohol composite; mass attenuation coefficient
Funding
- UGC-DAE-CSR, Indore [CSR-IC/BL-86/CRS-203/2016-19]
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The growing demand for lightweight, non-toxic and effective X- and gamma-ray shielding materials in various fields has led to the exploration of various polymer composites for shielding applications. In this study, tungsten filled polyvinyl alcohol (PVA) composites of varying WO3 concentrations (0 - 50 wt%) were prepared by solution cast technique. The structural, morphological, and thermal properties of the prepared composite films were studied using X-ray diffraction technique (XRD), Scanning electron microscopy (SEM) and Thermogravimetric analysis (TGA). The AC conductivity studies showed the low conductivity property of the composites. The X-ray (5.895 and 6.490 keV) and gamma-ray (59.54 and 662 keV) attenuation studies performed using CdTe and NaI(Tl) detector spectrometers revealed a noticeable increase in shielding efficiency with increase in filler wt%. The effective atomic number (Z(eff)) calculated by the direct method agreed with the values obtained using Auto-Z(eff) software. The % heaviness showed that tungsten filled polyvinyl alcohol composites are lighter than traditional shielding materials.
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