Transactions on Electrical and Electronic Materials

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Electromagnetic Interference Reflectivity of Nanostructured Manganese Ferrite Reinforced Polypyrrole Composites

  • Chakraborty, Himel (School of Materials Science and Engineering, Bengal Engineering and Science University) ;
  • Chabri, Sumit (Department of Metallurgy and Materials Engineering, Bengal Engineering and Science University) ;
  • Bhowmik, Nandagopal (Department of Metallurgy and Materials Engineering, Bengal Engineering and Science University)
  • Received : 2013.04.22
  • Accepted : 2013.10.24
  • Published : 2013.12.25
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Abstract

Nano-size manganese ferrite reinforced conductive polypyrrole composites reveal a core-shell structure by in situ polymerization, in the presence of dodecyl benzene sulfonic acid as the surfactant and dopant, and iron chloride as the oxidant. The structure and magnetic properties of manganese ferrite nano-fillers were measured, by using X-ray diffraction and vibrating sample magnetometer. The morphology, microstructure, and conductivity of the composite were characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, and four-wire technique. The microwave-absorbing properties of composites reinforcement dispersed in resin coating with the coating thickness of 1.2 nm were investigated, by using vector network analyzers, in the frequency range of 8~12 GHz. A reflection loss of -8 dB was observed at 10.5 GHz.

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