Abstract
The paper aims to evaluate the optical and dielectric properties of the nanocomposites based on polystyrene containing various amounts of barium titanate. The characteristics of the thermoplastic polymer are determined using the connectivity indices formalism, while those corresponding to the nanocomposites are evaluated using the parallel and series models. The variation of the optical and dielectric properties with the volume fraction of the nanofiller is discussed. Keywords: polystyrene, nanocomposites, optical properties, dielectric constant