Authors : A. D. Dahegaonkar, S. B. Kondawar and V. A. Thabhane
Page Nos : 366-370
Description :
Abstract: In the past few decades, Fly Ash (FA) has rapidly emerged as one of the most cost-effective and environment friendly resources rather than just being a waste material. Most of the current applications of FA, however, are primarily based on its microstructure and chemical composition only. Other physical and chemical properties of FA, and of the materials based on it, could possibly be utilized in other practical applications also. With this idea, we report in this paper about the synthesis, characterization and electric conductivity of a composite made of FA together with a very common conducting polymer Polyaniline (PANI). The polyaniline/fly ash (PANIFA) composites with various concentrations (10, 20, 30.40 and 50 %wt) of fly ash were synthesized by the process of in-situ polymerization by chemical oxidization method. Powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-Vis spectroscopy were used to characterize the samples. The d c-conductivity of the samples was measured as a function of temperature in the range 30°C-150°C. An expected decrease of conductivity was observed with addition of FA into PANI. The temperature dependence d c-conductivity for pure PANI and PANIFA composites conclude that electrical properties FA can be used to control the conductivity of PANI to make it suitable for various applications
Keywords: Conducting polymers, Polyaniline, Fly ash, Composites, Electrical conductivity
