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Polymer Bulletin

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26.09.2018 | Original Paper

Synthesis and enhanced microwave absorption properties of urchin-like polyaniline/Ni_0.4Zn_0.4Co_0.2Fe₂O₄ composites

verfasst von: Yiming Lei, Zhengjun Yao, Haiyan Lin, Jintang Zhou, Peijiang liu, Tongbaihui Qi, Yong Ning, Cheng Shen

Erschienen in: Polymer Bulletin | Ausgabe 6/2019

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Abstract

A novel polyaniline/Ni_0.4Zn_0.4Co_0.2Fe₂O₄ (PANI/NZCF) composite was synthesized by in situ polymerization of aniline in the presence of NZCF. The studies of structural, morphological and surface chemical bonding states were performed by X-ray diffraction, scanning electron microscopy and Fourier transform-infrared spectrometry, respectively. It was found that greater reflection loss and wider absorption bandwidths were possible by adjusting the mass ratio of NZCF to PANI on account of electromagnetic loss and impedance matching. The highest reflection loss (R_L) was − 40 dB at the frequency 15.8 GHz for the PANI/NZCF composite when the effective absorption frequency at which R_L < − 10 dB was in the range of 13.5–18 GHz with an absorber thickness of 1.7 mm at the mass ratio of 2:1. These effects are due to the urchin-like structure when compared to traditional encapsulation structures. Therefore, the above findings show that the PANI/NZCF composite with negligible thickness and strong absorption properties has great potential in the application of electromagnetic shielding and microwave absorbing.

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Titel: Synthesis and enhanced microwave absorption properties of urchin-like polyaniline/Ni0.4Zn0.4Co0.2Fe2O4 composites
verfasst von: Yiming Lei
Zhengjun Yao
Haiyan Lin
Jintang Zhou
Peijiang liu
Tongbaihui Qi
Yong Ning
Cheng Shen
Publikationsdatum: 26.09.2018
Verlag: Springer Berlin Heidelberg
Erschienen in: Polymer Bulletin / Ausgabe 6/2019
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI: https://doi.org/10.1007/s00289-018-2541-5

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