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EMI Shielding Characteristics of Electrically Conductive Polymer Blends of PS/PANI in Microwave and IR Region

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Abstract

Conductive polymeric blends (CPBs) of polystyrene and polyaniline (PS/PANI) were prepared by solution casting method in various compositions. Film thickness of CPBs was achieved ∼ 250 micron. PS/PANI blend films were analyzed for electromagnetic interference (EMI) shielding characteristics in microwave and near-infrared (NIR) regions. PS/PANI blends showed remarkable features. Most mobile telecommunications use GHz frequency range and shielding effectiveness was observed in 9 GHz to 18 GHz. In 9 GHz to 18 GHz frequency range, 45 dB shielding effectiveness was measured. CPBs were also analyzed in the NIR region and showed transmittance of <1%. Microwaves and NIR radiation are the most abundant in the environment and cause damage to human health. Both types of radiation causes serious damage to electronic devices as well.

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Correspondence to Iqra Abdul Rashid or Asra Tariq or Ayesha Afzal.

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Shakir, M.F., Abdul Rashid, I., Tariq, A. et al. EMI Shielding Characteristics of Electrically Conductive Polymer Blends of PS/PANI in Microwave and IR Region. Journal of Elec Materi 49, 1660–1665 (2020). https://doi.org/10.1007/s11664-019-07631-7

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Keywords

  • Polyaniline
  • electrically conductive polymer blend
  • EMI shielding
  • IR blocking