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Organic conductor: influence of preparation temperature

Lim, Mei Yee and Mahmud, Habibun Nabi Muhammad Ekramul and Kassim, Anuar and Mat Yunus, Wan Mahmood (2009) Organic conductor: influence of preparation temperature. Journal of Materials Processing Technology, 209 (8). pp. 3931-3936. ISSN 0924-0136; ESSN: 1873-4774

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The conducting polypyrrole–polyethylene glycol (PPy–PEG) composite films were produced at various polymerization temperature ranging from 5 °C to 60 °C using 1 × 10−3 M PEG, 0.20 M pyrrole and 0.10 M p-toluene sulfonate at 1.20 V (vs. SCE). The polymerization temperature of 5 °C appeared as the optimum preparation temperature showing the highest electrical conductivity of 70 S/cm and the thermal diffusivity of 8.76 × 10−7 m2 s−1. The electrical conductivity and thermal diffusivity exhibited a decreasing trend with the increase in polymerization temperature in the pyrrole solution used to prepare the composite films. The XRD results reveal that low temperature (5 °C) typically results in more crystalline films, which are denser, stronger and have higher conductivity. The optical microscopy of PPy–PEG shows the globular surface morphology. The surface of the of the solution side of PPy–PEG film prepared at low temperatures showed a globular morphology.

Item Type:Article
Keyword:Polypyrrole; Polyethylene glycol; Thermal diffusivity; Electrical conductivity; Dopant
Faculty or Institute:Faculty of Science
DOI Number:10.1016/j.jmatprotec.2008.09.011
ID Code:6876
Deposited By: Najwani Amir Sariffudin
Deposited On:21 May 2010 15:55
Last Modified:03 Jan 2017 19:25

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