en Radiation Biology Radiation Biology تحقيق بديع Original Research <div style="text-align: justify;"><span style="font-size:10pt"><span style="text-justify:newspaper"><span style="text-kashida-space:50%"><span style="line-height:119%"><span style="font-family:Calibri"><span style="color:black"><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Background</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">High-energy beams, such as gamma rays and X-rays, have many applications in nuclear power plants, healthcare, aerospace, and medicine. Therefore, appropriate radiation protection of living bodies in nuclear science and industries is essential to shield humans against the aforementioned radiation. Utilizing shielding materials is a practical method to protect individuals from harmful radiation. </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Materials and Methods</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">High-density polyethylene (HDPE)-based nanocomposites were prepared to perform as a shield against X-ray radiation by using various weight fractions of the tungsten oxide, barium sulfate, and bismuth trioxide (10, 15, 20, and 25% wt). Samples&rsquo; shielding properties were experimentally studied with an X-ray tube at 50, 60, 80, and 120 kVp. </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Results</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">: </span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">The recorded results showed that with increasing the number of nanoparticles, the transmission factor and HVL values were decreased and the linear attenuation coefficient was increased significantly. SEM, EDX analysis, and TEM evaluated the morphological properties of the fabricated samples. Results revealed that the particle size of the used nanoparticles was in the 25-50 nm range. Thermal study of the prepared nanocomposites including </span></span></span></span><span lang="el" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:el">&Delta;</span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">H</span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">_m</span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">, crystalline percentage (X</span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">_c</span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">), melting point (T</span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">_m</span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">) as well as the thermal stability of the nanocomposites were determined by using DSC, and TGA, respectively. </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Conclusion</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Samples including 20% ​​and 25% wt of Bismuth trioxide, and Tungsten trioxide loaded on graphene oxide reached 12% and 10% transmission factor values, respectively.</span></span></span></span></span></span></span></span></span></span></div> Linear attenuation, nanocomposite, polyethylene, shielding, tungsten. 79 87 http://ijrr.com/browse.php?a_code=A-10-1-1008&slc_lang=en&sid=1 T. Abdolahzadeh 7900319475328460023098 7900319475328460023098 No Department of Polymer Processing, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box 14975/112, Tehran, Iran J. Morshedian J.Morshedian@ippi.ac.ir 7900319475328460023099 7900319475328460023099 Yes Department of Polymer Processing, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box 14975/112, Tehran, Iran S. Ahmadi 7900319475328460023100 7900319475328460023100 No Department of Polymer Processing, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box 14975/112, Tehran, Iran