Abstract Paper
| Title | : Microwave characterization of polyaniline prepared via agitation-free self-stabilized dispersion polymerization |
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| Author(s) | : Paulbert Thomas, Neeraj K. Pushkaran and C. K. Aanandan |
| Article Information | : Volume 1 - Issue 2 (November - 2017) , 64-69 |
| Affiliation(s) | : 1 Department of Electronics, The Cochin College, Kochi, Kerala, India |
| : 2 Department of Electronics, CUSAT, Kochi, Kerala, India |
Abstract :
Processible forms of Polyaniline require special attention because of its inherent nature of forming poor dispersions in organic and aqueous solutions due to morphological distortions caused by conventional means of mechanical agitation of reaction mixture. In this work the authors have prepared Polyaniline samples by self-stabilized dispersion polymerization in the absence of mechanical agitation. The authors have also prepared Polyaniline samples via other chemical routines as reference samples. The dielectric properties of the products were analyzed in low frequency (20Hz-2MHz) and in C-band (4GHz-8GHz) of microwave frequency. The C band complex permittivity measured using cavity perturbation method is in good agreement with simulation results obtained from CST Microwave Studio, hence substantiating the material properties. The skin depth and conductivity of the material is measured. The material exhibits better conductivity when prepared under agitation free environment. Such made material is investigated for its potential use as a microwave absorber. The return loss and gain of the polymer pellet made using the proposed synthesis is investigated. The return loss seems to have good impedance matching. The radiative gain of the polymer pellet is exhibiting loss due to the high loss tangent associated with the material at the resonance frequency. Morphological analysis was done by taking SEM images of the samples to confirm the relationship between material quality and the properties obtained. The material can be used to fabricate microwave absorbers.
| Keywords | : RAM, Complex Permittivity, Polyaniline, SSDP |
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| Document Type | : Research Paper |
| Publication date | : November 26, 2017 |