Polyaniline (PANI)-coated titania (TiO2) have been prepared with ammonium persulfate (APS) Lis all oxidant in aqueous sodium dodecyl sulfate (SDS) miicellar Solution. The addition of a small amount of TiO2 nanoparticles greatly increased electrical conductivity from 5.89 to 14.2 S/cm. The effect of SDS for TiO2@PANI composites was studied in terms of morphology of the core-shell Structure, dispersibility of TiO2 in composites, and electrical conductivity.