MICROWAVE ABSORPTION (RETURN LOSS) STUDIES ON CONDUCTING POLYMER (PANI-CoO) COMPOSITES

Conducting Polymers (CPs) has very important properties like high conductivity, light weight, flexibility and reasonably facile processability. Due to these properties and their high conductivity/weight ratio, they have recently evinced much interest in potential application as electromagnetic (EMI) shielding screens, as coatings or jackets for flexible conductors and as broad band microwave absorbers. Conducting polymer Composites are required in many engineering applications, especially electromagnetic compatibility. Conducting polymer (PANI) and its composites are prepared by in situ polymerization method with dispersion of Cobalt oxide (CoO) and microwave properties such as the return loss of composites in the frequency range 8- 12 GHz is discussed in this paper.