A polyaniline/rutile-TiO2 nanocomposite, with a conductivity of 0.5 S cm(-1) at 25 degrees C, was prepared by in-situ polymerization of aniline in the presence of rutile-TiO2, nanoparticles, and was characterized by Fourier-transform infrared spectra, wide-angle X-ray diffraction, transmission electron microscopy, conductivity and cyclic voltammetry, as well as thermogravimetric analysis. The introduction of conducting polyaniline (PANI), not only improved the conductivity of rutile-TiO2, nanoparticles, but also improved the dispersibility of rutile-TiO2, nanoparticles. It can potentially be used in commercial applications as fillers for antistatic and anticorrosion coatings. (c) 2006 Elsevier B.V. All rights reserved.