Introducing a novel Polyvinyl chloride/Tungsten composites for shielding against gamma and X-ray radiations
Publish place: Iranian Journal of Nuclear Medicine، Vol: 29، Issue: 2
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IRJNM-29-2_002
تاریخ نمایه سازی: 4 بهمن 1401
Abstract:
Introduction: This study introduces a novel polyvinyl chloride (PVC)/tungsten composites with characterization of their shielding properties by employing different techniques. Methods: The PVC/tungsten composites were produced by employing various weight fractions of tungsten micro-particles including ۰, ۲۰, and ۴۰ % wt via melt blending method. In the next step, the linear attenuation coefficients of prepared composite samples were experimentally measured at ۶۶۲ keV γ-ray, and then were compared to the data estimated using MCNP simulation code and XCOM software. Also the shielding properties of samples were evaluated experimentally with an X-ray tube at ۴۰ kVp. Results: Recorded results showed that by increasing the weight percentage of the tungsten micro-particles, the coefficient of linear attenuation and also the absorbed dose values were increased dramatically. Samples containing ۲۰, and ۴۰% wt of tungsten micro-particles reached to ۸۹.۶۰ and ۹۲.۲۶ %of dose absorption, respectively. Interestingly the proposed composition were approximately ۲.۳ lighter than the commercial shields. Conclusion: The linear attenuation coefficient of the composite shields has been calculated to be ۰.۲۰ cm-۱, which was comparable with commercial Pb-based shields. Tungsten micro-particles addition to PVC matrix can increase the absorbed dose value. Plasticized PVC has suitable flexibility and low stiffness value, therefore it can be a good alternative for commercial aprons and other Pb-based shields in low energy voltages.
Authors
Tohid Abdolahzadeh
Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran
Jalil Morshedian
Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran
Shervin Ahmadi
Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran
Mohammad Reza Ay
Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran ۲ Department of Medical Physics and Biomedical Engineering, Tehran University of Medical Science, Tehran, Iran
Omid Mohammadi
Islamic Azad University, Tehran, Iran
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