The influence of polymerization time and dopant concentration on the absorption of microwave radiation in conducting polypyrrole coated textiles
Data(s) |
01/07/2009
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Resumo |
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.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Elsevier S.A. |
Relação |
http://dro.deakin.edu.au/eserv/DU:30016713/kaynak-theinfluenceofpolymerization-2009.pdf http://dx.doi.org/10.1016/j.synthmet.2009.03.013 |
Direitos |
2009, Elsevier B.V. |
Palavras-Chave | #conducting textiles #polypyrrole (PPy) #thermal imaging #microwave absorption |
Tipo |
Journal Article |