Introducing a novel Polyvinyl chloride/Tungsten composites for shielding against gamma and X-ray radiations

Document Type: Original Article

Authors

1 Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran

2 Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran 2 Department of Medical Physics and Biomedical Engineering, Tehran University of Medical Science, Tehran, Iran

3 Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran

4 Islamic Azad University, Tehran, Iran

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 0, 20, and 40 % wt via melt blending method. In the next step, the linear attenuation coefficients of prepared composite samples were experimentally measured at 662 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 40 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 20, and 40% wt of tungsten micro-particles reached to 89.60 and 92.26 %of dose absorption, respectively. Interestingly the proposed composition were approximately 2.3 lighter than the commercial shields.
Conclusion: The linear attenuation coefficient of the composite shields has been calculated to be 0.20 cm-1, 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.

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  1. Singh A K, Singh R K, Sharma B, Tyagi A K. Characterization and biocompatibility studies of lead free X-ray shielding polymer composite for healthcare application. Rad Phys Chem. 2017;138:9-15.
  2. Silva LA, Batista AMS, Serodre T,  Neto ATB,  Furtado CA,  Faria LQ. Enhancement of X-ray shielding properties of PVDF/BaSO 4 nanocomposites filled with graphene oxide. MRS Adv. 2019;4:169-175.
  3. Dejangah M, Ghojavand M, Poursalehi R. X-ray attenuation and mechanical properties of tungsten-silicone rubber nanocomposites. Mat Res Express. 2019;6:085045.
  4. Li Q, Wei Q,  Zheng W, Zheng Y, Okosi N,  Wang Z, Su M. Enhanced radiation shielding with conformal light-weight nanoparticle–polymer composite. ACS App Mat Int. 2018;10:35510-35515.
  5. Park S,  Kim H, Kim Y, Kim E, Seo Y. Multilayer-structured non-leaded metal/polymer composites for enhanced X-ray shielding. MRS Adv. 2018;3:1789-1797.
  6. Hashemi S A, Mousavi S M, Faghihi R, Arjmand M, Sina S, Amani A M. Lead oxide-decorated graphene oxide/epoxy composite towards X-Ray radiation shielding. Rad Phys Chem. 2018;146:77-85.
  7. Kashan JS, Rija NH, Abbas TA. Modified polymer matrix nano biocomposite for bone repair and replacement-radiological study. Eng Tech J. 2017;35:365-371.
  8. Li R, Gu Y, Yang Z, Li M, Hou Y, Zhang Z. Gamma ray shielding property, shielding mechanism and predicting model of continuous basalt fiber reinforced polymer matrix composite containing functional filler. Mat Design. 2017;124:121-130.
  9. Hashim A, Agool IR, Kadhim KJ. Novel of (polymer blend-Fe3O4) magnetic nanocomposites: preparation and characterization for thermal energy storage and release, gamma ray shielding, antibacterial activity and humidity sensors applications. J Mat Sci Mat Electronics. 2018;29:10369-10394.
  10. El-Khatib AM, Abbas MI, Abd Elzaher M, Badawi MS, Alabsy MT, Alharshan GA, Aloraini DA. Gamma attenuation coefficients of nano cadmium oxide/high density polyethylene composites. Sci Rep. 2019;9:1-11.
  11. Arranz-Andrés J, Pérez E, Cerrada M. Nanocomposites based on isotactic polypropylene-copper nanoparticles as electromagnetic shields. Adv Sci Eng Med. 2013;5:1524-1532.
  12. Özdemir T, Yılmaz SN. Mixed radiation shielding via 3-layered polydimethylsiloxane rubber composite containing hexagonal boron nitride, boron (III) oxide, bismuth (III) oxide for each layer. Rad Phys Chem. 2018;152:17-22.
  13. Nambiar S, Osei EK, Yeow JTW. Polymer nanocomposite‐based shielding against diagnostic X‐rays. J App Polym Sci. 2013;127:4939-4946.
  14. Yim Y-J, Rheeb YK, Park SJ. Electromagnetic interference shielding effectiveness of nickel-plated MWCNTs/high-density polyethylene composites. Comp Part B: Eng. 2016;98:120-125.
  15. Sachdev V K, Srivastava N K, Kumar K, Mehra R M. Pre-localized graphite/polyvinyl chloride composites for electromagnetic interference shielding in the X-band frequency range. Mater Sci Pol. 2005;23:269.
  16. Aghamiri MR, Mortazavi SMJ, Tayebi M, Mosleh-Shirazi MA, Baharvand H, Tavakkoli-Golpayegani A, Zeinali-Rafsanjani B. A novel design for production of efficient flexible lead-free shields against X-ray photons in diagnostic energy range. J Bio Phys Eng. 2011;1:17-21.
  17. Mortazavi S M J, Zahiri A, Shahbazi GD, Sina S, Haghani M. Designing a shield with lead-free polymer base with high radiation protection for X-ray photons in the range of diagnostic radiology using monte carlo simulation code MCNP5. 2016;34:637-641.
  18. Shemelya CM, Rivera A, Perez AT, Rocha C, Liang M, Yu X, Kief C, Alexander D, Stegeman J, Xin H, Wicker RB, MacDonald E, Roberson DA. Mechanical, electromagnetic, and X-ray shielding characterization of a 3D printable tungsten–polycarbonate polymer matrix composite for space-based applications. J Electron Mater. 2015;44:2598-2607.
  19. Akkurt I, Akyıldırım H, Mavi B, Kilincarslan S, Basyigit C. Photon attenuation coefficients of concrete includes barite in different rate. Ann Nucl Energy. 2010;37:910–914.
  20. Berger MJ, Hubbell JH. XCOM: Photon cross sections on a personal computer. Available at: https://nvlpubs.nist.gov/nistpubs/Legacy/IR/nbsir87-3597.pdf
  21. Harish V, Nagaiah N, Harish Kumar HG. Lead oxides filled isophthalic resin polymer composite for gamma radiation shielding applications. Ind J Pure App Phys.  2012;50(11):847-850.