Microwave Absorption Properties of Polyaniline/Carbonyl Iron Composites |
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| Authors: | Naeimeh Bahri-Laleh Khadijeh Didehban Elham Yarahmadi Seyed Amin Mirmohammadi Guowei Wang |
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| Affiliation: | 1.Department of Polymerization Engineering,Iran Polymer and Petrochemical Institute,Tehran,Iran;2.Department of Chemistry,Payame Noor University,Tehran,Iran;3.Department of Chemical Engineering, Central Tehran Branch,Islamic Azad University,Tehran,Iran;4.Department of Applied Chemistry, Graduated School of Engineering,Osaka University,Suita,Japan |
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| Abstract: | In this work, carbonyl iron (CI) containing polya- niline composites (PANI+CI) were prepared via in-situ polymerization of aniline in an aqueous solution containing different amounts of CI as the magnetic filler for the micro- wave absorbers. The incorporation of the magnetic powder to the PANI matrix was confirmed by X-ray diffraction (XRD), IR and SEM. Synthesized PANI+CI composite particles were subsequently added to an epoxy resin matrix to produce related R-PANI+CI composites. Study of thermal properties by thermogravimetric analysis revealed enhanced thermal stability of the composites. The electromagnetic-absorbing properties were studied by measuring the reflection loss in the frequency range of 8.0 to 12.0 GHz. The experimental results indicated that the electromagnetic wave absorbing properties of PANI+CI composites are dependent on the PANI/CI weight ratio. The good reflection loss of the composite at the optimum PANI/CI weight ratio of 1:6 suggests its potential applicability as a good radar absorber. |
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