Effect of concentration of Poly(vinyl pyrrolidone) on Polyaniline/Polystyrene nanocomposite in aqueous media

Polyaniline/polystyrene (PAn/PS) nanocomposite was prepared in the aqueous solution by polymerization of styrene and aniline using potassium iodate (KIO3) and ammonium peroxy disulfate ((NH4)2S2O8) as oxidant in the presence of poly(vinyl pyrrolidone) as surfactant. The PAn/PS nanocomposite was characterized in terms of morphology, chemical structure, glass transition temperature and particle size. The results indicate that the morphology, chemical structure and glass transition temperature of products are dependent on the concentration of surfactant. The chemical structure, morphology and glass transition temperature of product were studied by fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and differential scanning calorimetry (DSC).