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<p>The present study details the design and integral characterization of a novel polyethylene naphthalate (PEN)/tungsten oxide (WO<sub>3</sub>) composite designed for gamma radiation shielding applications. The composites were prepared by melt processing, incorporating WO<sub>3</sub> at 5, 10, and 20% by mass as a high-Z filler to enhance the radiation attenuation efficiency. We performed morphological, structural, and thermal characterizations of these composites using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Additionally, the tensile test was performed to evaluate the mechanical strength. The shielding performance was evaluated by determining the mass attenuation coefficient (MAC, <i>µ</i><sub>m</sub>), half-value layer (HVL), tenth-value layer (TVL), and mean free path (MFP) across photon energies ranging from 31 to 1332&#xa0;keV. These parameters were determined experimentally using the HPGe gamma detector and the NIST XCOM database, and were theoretically simulated using the EGS4 Monte Carlo approach. A strong agreement was found between the experimental, simulation, and theoretical attenuation values, confirming the effectiveness of the composite in gamma radiation shielding. The MAC value of the pure PEN, which was 0.080&#xa0;cm<sup>2</sup>/g at 662&#xa0;keV, was increased to 0.086&#xa0;cm<sup>2</sup>/g by introducing 20&#xa0;wt% of WO<sub>3</sub>. The results indicate the potential of PEN/WO<sub>3</sub> composites as lightweight, efficient shielding materials for radiation protection applications, particularly in the 31–276&#xa0;keV energy range.</p>

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Development and Characterization of Polyethylene Naphthalate (PEN)/Tungsten Oxide (WO3) Composites for Gamma Radiation Shielding Applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月22日

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  • Takoua Charef,
  • Foued Zouai,
  • Omer Yunus Gumus,
  • Ahmet Celik

摘要

The present study details the design and integral characterization of a novel polyethylene naphthalate (PEN)/tungsten oxide (WO3) composite designed for gamma radiation shielding applications. The composites were prepared by melt processing, incorporating WO3 at 5, 10, and 20% by mass as a high-Z filler to enhance the radiation attenuation efficiency. We performed morphological, structural, and thermal characterizations of these composites using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Additionally, the tensile test was performed to evaluate the mechanical strength. The shielding performance was evaluated by determining the mass attenuation coefficient (MAC, µm), half-value layer (HVL), tenth-value layer (TVL), and mean free path (MFP) across photon energies ranging from 31 to 1332 keV. These parameters were determined experimentally using the HPGe gamma detector and the NIST XCOM database, and were theoretically simulated using the EGS4 Monte Carlo approach. A strong agreement was found between the experimental, simulation, and theoretical attenuation values, confirming the effectiveness of the composite in gamma radiation shielding. The MAC value of the pure PEN, which was 0.080 cm2/g at 662 keV, was increased to 0.086 cm2/g by introducing 20 wt% of WO3. The results indicate the potential of PEN/WO3 composites as lightweight, efficient shielding materials for radiation protection applications, particularly in the 31–276 keV energy range.