kaynak-electromagneticinterference-2007.pdf (390.81 kB)
Electromagnetic interference shielding and radiation absorption in thin polypyrrole films
journal contribution
posted on 2007-01-01, 00:00 authored by E Håkansson, A Amiet, Saeid Nahavandi, Akif KaynakAkif KaynakResults of permittivity measurements, electromagnetic interference shielding effectiveness, and heat generation due to microwave absorption in conducting polymer coated textiles are reported and discussed. The intrinsically conducting polymer, polypyrrole, doped with anthraquinone-2-sulfonic acid (AQSA) or para-toluene-2-sulfonic acid (pTSA) was applied on textile substrates and the resulting materials were investigated in the frequency range 1–18 GHz. The 0.54 mm thick conducting textile/polypyrrole composites absorbed up to 49.5% of the incident 30–35 W microwave radiation. A thermography station was used to monitor the temperature of these composites during the irradiation process, where absorption was confirmed via visible heat losses. Samples with lower conductivity showed larger temperature increases caused by microwave absorption compared to samples with higher conductivity. A sample with an average sheet resistivity of 150 Ω/sq. showed a maximum temperature increase of 5.27 °C, whilst a sample with a lower resistivity (105 Ω/sq.) rose by 3.85 °C.
History
Journal
European polymer journalVolume
43Issue
1Pagination
205 - 213Publisher
Elsevier ScienceLocation
Oxford, EnglandPublisher DOI
ISSN
0014-3057eISSN
1873-1945Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2006, Elsevier LtdUsage metrics
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