Scholarlink

<p>This study presents transparent, flexible, lead-free polyvinyl butyral (PVB) films that utilize FeWO<sub>4</sub> nanoparticles to substantially enhance gamma-photon attenuation properties and thermal stability, thereby facilitating the development of lightweight shielding materials. Herein, PVB films doped with FeWO<sub>4</sub> (0%, 1%, 2%, and 3 wt.%) were synthesized via the solution casting technique. XRD demonstrated that FeWO<sub>4</sub> NPs possess a monoclinic primitive structure with a crystallite size of 47&#xa0;nm. EDX and SEM were used to evaluate the morphology and elemental composition of the FeWO<sub>4</sub> NPs. Thermogravimetric analysis (TGA) revealed that incorporating FeWO<sub>4</sub> markedly improved the thermal stability of PVB films. The linear attenuation coefficient for gamma rays, ranging from 0.02&#xa0;MeV to 15&#xa0;MeV, was simulated using the MCNP6 code. The results indicate that the mass attenuation coefficient (MAC) rises progressively with increasing FeWO<sub>4</sub> content, particularly at low to intermediate gamma energies, accompanied by a decrease in both the half-value layer (HVL) and the mean free path (MFP) relative to pure PVB. MCNP6 simulation data align with the obtained Phy-X/PSD calculations and XCOM databases, indicating strong cross-validation among methods. The effective electron number, N<sub>eff</sub>, increases with FeWO<sub>4</sub> content at photon energies where photoelectric and Compton processes dominate. The Fast neutron removal cross section (FNRCS) values of PVB/FeWO<sub>4</sub> nanocomposites increased by incorporating&#xa0;FeWO<sub>4</sub> NPs. PVB/FeWO<sub>4</sub> nanocomposites are proposed as an alternative to ecologically friendly and lead-free materials for radiation shielding.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Structural, thermal characteristics, and radiation shielding properties of FeWO4 nanoparticles doped PVB films

  • 期刊论文

  • 发表日期：

    2026年1月28日

查看全文
  • Amani Alruwaili,
  • Mohammed O. Alziyadi,
  • Asma Alkabsh,
  • B. Alayed,
  • M. S. Shalaby

摘要

This study presents transparent, flexible, lead-free polyvinyl butyral (PVB) films that utilize FeWO4 nanoparticles to substantially enhance gamma-photon attenuation properties and thermal stability, thereby facilitating the development of lightweight shielding materials. Herein, PVB films doped with FeWO4 (0%, 1%, 2%, and 3 wt.%) were synthesized via the solution casting technique. XRD demonstrated that FeWO4 NPs possess a monoclinic primitive structure with a crystallite size of 47 nm. EDX and SEM were used to evaluate the morphology and elemental composition of the FeWO4 NPs. Thermogravimetric analysis (TGA) revealed that incorporating FeWO4 markedly improved the thermal stability of PVB films. The linear attenuation coefficient for gamma rays, ranging from 0.02 MeV to 15 MeV, was simulated using the MCNP6 code. The results indicate that the mass attenuation coefficient (MAC) rises progressively with increasing FeWO4 content, particularly at low to intermediate gamma energies, accompanied by a decrease in both the half-value layer (HVL) and the mean free path (MFP) relative to pure PVB. MCNP6 simulation data align with the obtained Phy-X/PSD calculations and XCOM databases, indicating strong cross-validation among methods. The effective electron number, Neff, increases with FeWO4 content at photon energies where photoelectric and Compton processes dominate. The Fast neutron removal cross section (FNRCS) values of PVB/FeWO4 nanocomposites increased by incorporating FeWO4 NPs. PVB/FeWO4 nanocomposites are proposed as an alternative to ecologically friendly and lead-free materials for radiation shielding.