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<p>With the rapid evolution of 5G wireless communication and high-frequency electronic systems, the demand for flexible, lightweight electromagnetic interference (EMI)-shielding materials has intensified. This study reports the development of high-performance composite thick films consisting of a poly(vinylidene fluoride) (PVDF) matrix integrated with barium hexaferrite (BHF) nanoparticles via a modern solution-casting method. X-ray diffraction (XRD) and Field Emission Scanning Microscope (FESEM) analysis confirmed that the BHF nanoparticles act as nucleating agents, effectively promoting the transition of PVDF from the nonpolar α-phase to the electroactive, polar β-phase in an all-trans planar zigzag (TTTT) configuration. The 0.70(PVDF)–0.30(BHF) composite demonstrated a remarkable synergistic effect, achieving an optimized dielectric constant and high dielectric loss attributed to the Boundary Layer Capacitance (BLC) model and interfacial polarization. In the 12–18&#xa0;GHz frequency range, the composite exhibited significant EMI-shielding effectiveness, reaching approximately 22&#xa0;dB. These results highlight the material’s potential as a flexible, thin, and lightweight solution for electromagnetic pollution reduction in aerospace, defence, and sensitive medical instrumentation.</p> Graphical abstract <p></p>

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Electromagnetic pollution reduction using poly(vinylidene fluoride) and barium hexaferrite nanoparticle composite thick film

  • 期刊论文

  • 发表日期：

    2026年5月20日

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  • Mayank Mausam,
  • Kaushal Jha,
  • Sanjay Kumar,
  • Sunil Kumar

摘要

With the rapid evolution of 5G wireless communication and high-frequency electronic systems, the demand for flexible, lightweight electromagnetic interference (EMI)-shielding materials has intensified. This study reports the development of high-performance composite thick films consisting of a poly(vinylidene fluoride) (PVDF) matrix integrated with barium hexaferrite (BHF) nanoparticles via a modern solution-casting method. X-ray diffraction (XRD) and Field Emission Scanning Microscope (FESEM) analysis confirmed that the BHF nanoparticles act as nucleating agents, effectively promoting the transition of PVDF from the nonpolar α-phase to the electroactive, polar β-phase in an all-trans planar zigzag (TTTT) configuration. The 0.70(PVDF)–0.30(BHF) composite demonstrated a remarkable synergistic effect, achieving an optimized dielectric constant and high dielectric loss attributed to the Boundary Layer Capacitance (BLC) model and interfacial polarization. In the 12–18 GHz frequency range, the composite exhibited significant EMI-shielding effectiveness, reaching approximately 22 dB. These results highlight the material’s potential as a flexible, thin, and lightweight solution for electromagnetic pollution reduction in aerospace, defence, and sensitive medical instrumentation.

Graphical abstract