Conductivity and Thermal-Stability of 5-Sulfosalicylic Acid Sodium Doped Polypyrrole

Abstract:

By varying the dopant-to-pyrrole ratio in a wide range from 0 to 60% a series of 5-sulfosalicylic acid sodium doped polypyrrole was synthesized in situ in aqueous solution with ferric chloride as the oxidant. The resulting polypyrroles were characterized with the four-probe, laser light scattering and thermo-gravimetry analysis, differential thermal analysis, respectively. Our results indicate that the particle size plays a determinative role to tune the conductivity in the studied range of dopant concentration; and this series of polypyrrole with size-tuned-conductivity exhibits little less thermal-stability although its size and conductivity changes simultaneously and acutely with the dopant concentration. The association of the conductivity with particle size was interpreted in terms of a theoretical model proposed by Baughman and Shacklelette.

• Periodical: Key Engineering Materials (Volumes 428-429)
• Pages: 579-582
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.428-429.579
• Online since: January 2010
• Authors: Fu Fang Zhou, Bao Gai Zhai, Chun Xu Pan, Yuan Ming Huang
• Keywords: 5-Sulfosalicylic Acid Sodium, Conductivity, Laser Light Scattering, Particle Size, Polypyrrole, Thermal Stability

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