SYNTHESIS AND CHARACTERIZATION OF A POLYANILINE (PANI)/ POLYMETHACRYLIC ACID COMPOSITE

In this paper, we present the synthesis of ultra-high dielectric constant composite of polyaniline, PANI?DBSA/ PMAA. The PMAA served as a polymeric stabilizer, protecting the PANI particles from macroscopic aggregation. The influence of the PANI content on the morphological, dielectric and electrical properties of the composites was investigated. The frequency dependence of dielectric permittivity, dielectric loss, loss tangent and electric modulus were analyzed in the frequency range . SEM micrograph revealed that composites with high PANI consisted of numerous nano-scale PANI particles that were evenly distributed within the PAA matrix. The high dielectric constants of these composites were attributed to the sum of the small capacitors of the PANI particles. The composites, thus synthesized have been characterized by infrared spectroscopy and X-ray diffraction, FTIR, Conductivity. The morphology of these samples was studied by scanning electron microscopy.