International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2572

Full Length Research Paper

Polyaniline/Fe3O4 coated on MnFe2O4 nanocomposite: Preparation, characterization, and applications in microwave absorption

Seyed Hossein Hosseini1* and A. Asadnia2
1Department of Chemistry, Faculty of Science, Islamshahr Branch, Islamic Azad University, Tehran-Iran. 2Young Researchers Club, Center Tehran Branch, Islamic Azad University, Tehran-Iran
Email: [email protected]

  •  Accepted: 03 June 2013
  •  Published: 16 June 2013

Abstract

Conductive polyaniline (PANi)/Fe3O is coated on the MnFe2O4  nanocomposite with multi core shell structure was synthesized by in-situ polymerization in the presence of dodecyl benzene sulfonic acid (DBSA) as the surfactant and dopant and ammonium persulfate (APS) as the oxidant. The structure and magnetic properties of Fe3O4 coated on the MnFe2O4 nanoparticles were studied by using powder X-ray diffraction (XRD) and vibrating sample magnetometer (VSM), respectively. The morphology, microstructure and DC conductivity of the nanocomposite were characterized by scanning electron Microscopy (SEM), fourier transform infrared spectroscopy (FTIR) and four-wire-technique, respectively. The microwave absorbing properties of the nanocomposite dispersed in resin acrylic with thickness of 1.4 mm were investigated by a HP 8720B vector network analyzer and standard horn antennas in Anechoic chamber in the frequency range of 8–12GHz. A minimum reflection loss of -18 dB was observed at 8.6 GHz.

 

Key words: Nano-structures, polymer-matrix composites (PMCs), magnetic properties, microwave absorption (nominated).