Interfacial synthesis of polypyrrole microparticles for effective dissipation of electromagnetic waves

A strategy has been adopted to regulate the dielectric properties of polypyrrole microparticles for good electromagnetic absorption performance through an interfacial synthesis process. Classical Debye relaxation theory and resistor-capacitor model have been employed to illustrate the electromagneti...

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Bibliographic Details
Published inJournal of applied physics Vol. 118; no. 20
Main Authors Xie, Aming, Jiang, Wanchun, Wu, Fan, Dai, Xiaoqing, Sun, Mengxiao, Wang, Yuan, Wang, Mingyang
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 28.11.2015
Subjects
Applied physics
Conducting polymers
Dielectric properties
Electromagnetic absorption
Electromagnetic radiation
Microparticles
Morphology
Paraffins
Polypyrroles
Synthesis
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Summary:A strategy has been adopted to regulate the dielectric properties of polypyrrole microparticles for good electromagnetic absorption performance through an interfacial synthesis process. Classical Debye relaxation theory and resistor-capacitor model have been employed to illustrate the electromagnetic dissipation mechanism of polypyrrole microparticles. The prepared polypyrrole microparticles exhibit an effective electromagnetic absorption bandwidth 5.48 GHz (deeper than −10 dB) from 12.52 to 18 GHz with a filler loading of 15 wt. % in paraffin. It was demonstrated that the morphologies of conducting polymers can significantly affect the dissipation of electromagnetic waves, supplying a strategy for the design of effective electromagnetic absorption materials.
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ISSN:0021-8979
1089-7550
DOI:10.1063/1.4936549