Abstract
Conducting polymers have attracted considerable attention in the recent years due to their unique thermal, electrical, optical and magnetic properties. These polymers have been conducive for fabrication of micro-electronic devices. Among these polymers, Polyaniline (PANI) possesses an exceptional properties including structural, thermal and electrical. We have synthesized PANI in Emeraldine salt form by chemical oxidation method with controlled pH3 by using Ammonium perdisulphate as oxidizing agent. The morphology of PANI has been determined by using X-Ray Diffraction (XRD), Scanning Electron Micrograms (SEM) and Dynamic Light Scattering (DLS). The studies revealed that Polyaniline possess rod like shape with radius around 75 nm and length around 617.6 nm. The DSC thermogram shows two exothermal peaks at around 97.07 o C and 152 o C, these peaks are attributed to the glass transition temperature (Tg) and PANI degradation temperature respectively. The final valley point (endothermic) around 175 o C is attributed to the melting point (Tm) of PANI. The voltage-current (V-I) characteristics of Polyaniline have studied at temperature 300 K. Due to semi crystalline solid nature of PANI, the transport of charge carriers may takes place in between and along PANI chains.
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