Radar Absorption Properties of Ni0.5Zn0.5Fe2O4/PANI/epoxy Nanocomposites |
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| Authors: | Khadijeh Didehban Elham Yarahmadi Farshid Nouri‐Ahangarani Seyed Amin Mirmohammadi Naeimeh Bahri‐Laleh |
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| Affiliation: | 1. Department of Chemistry, Payame Noor University, P.O. Box 19395‐36972, Tehran, Iran;2. Department of Polymerization Engineering, Iran Polymer and Petrochemical Institute, P.O. Box 14965/115, Tehran, Iran |
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| Abstract: | A nitrate? citrate gel was prepared from metallic nitrates and citric acid by sol? gel process and was further used to synthesize Ni0.5Zn0.5Fe2O4 nanocrystalline powder by auto‐combustion. Then, two novel 15 and 35% (w/w) magnetic Ni0.5Zn0.5Fe2O4 containing polyaniline nanocomposites, named as PANI‐Ni15 and PANI‐Ni35, respectively, were prepared via in‐situ polymerization of aniline in an aqueous solution containing proper amount of Ni0.5Zn0.5Fe2O4 magnetic powder. The incorporation of the nanopowders to PANI matrix was confirmed by X‐ray diffraction (XRD), IR and SEM. Synthesized PANI‐NiZn ferrite composite particles were subsequently added to an epoxy resin matrix to produce related nanocomposites. The morphological properties of these nanocomposite materials were investigated by SEM and TEM. The electromagnetic‐absorbing properties were studied by measuring the reflection loss in the frequency range of 8.0 to 12.0 GHz. Results showed the reflection loss of the PANI‐Ni35 composite is higher than pure polyaniline and PANI‐Ni15. The good reflection loss of the nanocomposites suggests their potential applicability as radar absorber. |
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| Keywords: | Polyaniline Radar absorbing materials Wave absorption Polyaniline composites Nanocrysyalline Ni0.5Zn0.5Fe2O4 |
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