The influence of polymerization time and dopant concentration on the absorption of microwave radiation in conducting polypyrrole coated textiles

Kaynak, Akif, Hakansson, Eva and Amiet, Andrew 2009, The influence of polymerization time and dopant concentration on the absorption of microwave radiation in conducting polypyrrole coated textiles, Synthetic metals, vol. 159, no. 13, pp. 1373-1380.

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Title The influence of polymerization time and dopant concentration on the absorption of microwave radiation in conducting polypyrrole coated textiles
Author(s) Kaynak, Akif
Hakansson, Eva
Amiet, Andrew
Journal name Synthetic metals
Volume number 159
Issue number 13
Start page 1373
End page 1380
Total pages 8
Publisher Elsevier S.A.
Place of publication Basel, Switzerland
Publication date 2009-07
ISSN 0379-6779
Keyword(s) conducting textiles
polypyrrole (PPy)
thermal imaging
microwave absorption
Summary Temperature changes in conducting polypyrrole/para-toluene-2-sulphonic acid (PPy/pTSA) coated nylon textiles due to microwave absorption in the 8–9 GHz and 15–16 GHz frequency ranges were obtained by a thermography station during simultaneous irradiation of the samples. The temperature values are compared and related to the amounts of reflection, transmission and absorption obtained with a non-contact free space transmission technique, indicating a relationship between microwave absorption and temperature increase. Non-conductive samples showed no temperature increase upon irradiation irrespective of frequency range. The maximum temperature difference of around 4 °C in the conducting fabrics relative to ambient temperature was observed in samples having 48% absorption and 26.5 ± 4% reflection. Samples polymerized for 60 or 120 min with a dopant concentration of 0.018 mol/l or polymerized for 180 min with a dopant concentration of 0.009 mol/l yielded optimum absorption levels. As the surface resistivity decreased and the reflection levels increased, the temperature increase upon irradiation reduced.
Notes Reproduced with the specific permission of the copyright owner.
Language eng
Field of Research 091299 Materials Engineering not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
HERDC collection year 2009
Copyright notice ©2009, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30016713

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
School of Engineering
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