Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: 35, Pages: 1-4
Vineet V. Karambelkar1*, S. N. Paul1 and J. D. Ekhe2
1 Department of Metallurgical and Materials Engineering, Visvesvaraya National Institute of Technology, Nagpur - 10, Maharashtra, India; [email protected]
2 Department of Applied Chemistry, Visvesvaraya National Institute of Technology, Nagpur - 10, Maharashtra, India; [email protected]
Polypyrrole, an Intrinsically Conductive Polymer (ICP) was obtained through chemical oxidative polymerization of pyrrole and a low temperature sensing device was designed by pelletizing Ppy/Piezoceramic powder composite with Tin. Raw/ Green pellets of Ppy/PZT composite were liquid phase sintered above the solidus temperature of Tin metal (2540 C) to yield the final sensor. Current-Voltage (I-V) characteristics of two such sensor samples were analyzed. Sensor sample with 4 % Tin yielded maximum conductivity of 9.12 S/cm as compared with the sensor sample with 3 % Tin, conductivity dropped to 5 S/cm. Also, almost non- linear trend in the I-V curves was observed due to the environmental factors such as a small temperature range between 00 C-1100 C. Characterization of both the sensor samples using SEM confirmed that the sensor with higher Tin content behaved as a better sensor than the sensor having a lower Tin content.
Keywords: Conducting Polymers, Polypyrrole, PZT, Ppy/PZT Temperature Sensor, Sensor Design
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