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Electromagnetic interference shielding and radiation absorption in thin polypyrrole films

Håkansson, Eva, Amiet, Andrew, Nahavandi, Saeid and Kaynak, Akif 2007, Electromagnetic interference shielding and radiation absorption in thin polypyrrole films, European polymer journal, vol. 43, no. 1, pp. 205-213.

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Title Electromagnetic interference shielding and radiation absorption in thin polypyrrole films
Author(s) Håkansson, Eva
Amiet, Andrew
Nahavandi, Saeid
Kaynak, Akif
Journal name European polymer journal
Volume number 43
Issue number 1
Start page 205
End page 213
Publisher Elsevier Science
Place of publication Oxford, England
Publication date 2007-01
ISSN 0014-3057
1873-1945
Keyword(s) polypyrrole
thin films
electromagnetic interference shielding
thermal imaging
Summary Results 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.
Language eng
Field of Research 091299 Materials Engineering not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2006, Elsevier Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007074

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