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<p>Lightweight, highly porous, conducting yet stable and sustainable nanocomposites are always in high demand owing to their distinctive physicochemical, structural and electronic properties. However, coexistence of such properties in a single-phase material is rare owing to the idiosyncratic nature of these characteristics. Therefore, desirable properties are introduced in the composites via factual designing and integration of multiple phases. Herein, we have fabricated efficient EMI shielding nanocomposites by coupling the <i>π</i>-conjugated polymer polythiophene (PTh) with copper oxide (CuO) nanoparticles. PTh@CuO nanocomposites are synthesized by a cost-effective and facile chemical oxidative polymerization route where in situ polymerization was carried out on the surface of copper oxide (CuO) nanoparticles. The morphological, structural characteristics and thermal behavior of the developed PTh@CuO are characterized using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The proposed composites exhibit an electromagnetic shielding effectiveness of approximately 69.8&#xa0;dB at an applied frequency of 12.4&#xa0;GHz and barrier thickness of 1&#xa0;mm for 25 wt% of CuO embedded polythiophene matrix. This value overweighs many commercially available shielding materials and highlights the applicability of PTh@CuO nanocomposites for practical real-time applications in the field of aviation and aerospace.</p>

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Lightweight PTh@CuO nanocomposites for high performance electromagnetic interference shielding

  • 期刊论文

  • 发表日期：

    2026年6月25日

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  • Sanju,
  • Asha,
  • Rishi Pal,
  • Madhu Rani,
  • Ashima,
  • Rachna Dhankhar,
  • Supreet

摘要

Lightweight, highly porous, conducting yet stable and sustainable nanocomposites are always in high demand owing to their distinctive physicochemical, structural and electronic properties. However, coexistence of such properties in a single-phase material is rare owing to the idiosyncratic nature of these characteristics. Therefore, desirable properties are introduced in the composites via factual designing and integration of multiple phases. Herein, we have fabricated efficient EMI shielding nanocomposites by coupling the π-conjugated polymer polythiophene (PTh) with copper oxide (CuO) nanoparticles. PTh@CuO nanocomposites are synthesized by a cost-effective and facile chemical oxidative polymerization route where in situ polymerization was carried out on the surface of copper oxide (CuO) nanoparticles. The morphological, structural characteristics and thermal behavior of the developed PTh@CuO are characterized using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The proposed composites exhibit an electromagnetic shielding effectiveness of approximately 69.8 dB at an applied frequency of 12.4 GHz and barrier thickness of 1 mm for 25 wt% of CuO embedded polythiophene matrix. This value overweighs many commercially available shielding materials and highlights the applicability of PTh@CuO nanocomposites for practical real-time applications in the field of aviation and aerospace.