Preparation of Poly Aniline by Chemical Ox-idative Method and Its Characterization

Abstract

The present work reports the oxidative synthesis of poly aniline using K 2 Cr 2 O 7 as an oxidizing agent and H 2 SO 4 as dopant. The synthesized polymer was characterized by solubility test and UV-visible spectroscopic technique. The synthesized polymer (poly aniline) was insoluble in ethanol, acetone, benzene and water. The absorbance of UV-visible spectra shows two reductive peaks at some wake length. The band observed at 327 -365 nm for the PANI samples corresponds to n-p * transitions of aniline and the broad band at 600 -620 nm is due to n-p * transitions of quinine-im-ine groups.