Fabrication and characterization of polypyrrole sensor-Effect of SDBS dopant on sensitivity

A chemical sensor was prepared by deposition of polypyrrole films by chemical polymerization of pyrrole at room temperature, using hexahydrate ferric chloride as oxidant, on a ceramic substrate placed on the bottom of the beaker (in-situ polymerization). On the substrate two interdigitated metallic electrodes were priory deposited by screen printing, to reduce film resistance. These films were characterized by different methods namely FTIR, UV-Vis, XRD.