Synthesis and characterization of electrically conducting polyaniline in water–oil microemulsion

Abstract

Nanoscopic polyaniline particles were successfully synthesized in a stable water–oil microemulsion. FT-IR spectra showed that sodium dodecylbenzenesulfonate (SDBA) acted both as surfactant and dopant in the acidic reaction media. Wide-angle X-ray diffraction, UV–visible spectra and thermal analysis suggested that the crystallinity of PANI synthesized in the microemulsion system was increased dramatically while the chain-transfer reactions of co-surfactants decreased the π-conjugation length along the polymer chain.