Infrared spectroscopic study of solid-state protonation and oxidation of polyaniline

Infrared spectrum of the polyaniline sulfate was compared with the spectrum of the polyaniline base after solid-state protonation with an equimolar amount of camphorsulfonic acid and with the spectrum of the polyaniline base after solid-state oxidation with ammonium peroxodisulfate. In both cases electrically conducting product was obtained. The bands characteristic of conducting protonated or oxidized form were identified in the spectra of the blends.