Articles

Study on Comparative Analysis of Polymerization of Pyrrole Using Electrochemical Method and UV Photo Irradiation

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Polymerization of pyrrole using various methods like pyrrole using electrochemical method and UV Photo irradiation has been investigated. Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), X-ray diffraction (XRD) techniques were used to study the internal structure, material morphology, chemical nature of conducting polymers. The temperature dependence of the electrical conductivity of the Polypyrrole, Their behavior resemble the metallic conductors.

Comparative Study of Synthesis of Polypyrrole Using Chemical Polymerization Technique and Plasmapolymerization

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Polypyrrole (PPy) was synthesized using the Chemical polymerization technique using Ammonium per sulphate (APS), as an oxidant and Plasma Polymerization technique. The polypyrrole synthesized by the chemical oxidation method was in black amorphous powder form. In Plasma polymerization, thin films were created on a glass plate. Structural and morphological properties of the polymer were studied by FTIR, SEM and. X-ray diffraction. The electrical conductivity of chemically prepared PPy was measured by two probe method and was found to be in the range of 10−3 to 10−2 S/cm for chemical oxidative method, while that of Plasma polymerization it was around 10−3 S/cm. Other characterization also shows that Chemical polymerization has an edge over plasma polymerization, but plasma polymerization is more impurity-free than chemical polymerization.