The background of work carried out highlighting on polyaniline, N-substituted polyaniline and acid-doped polyaniline. The problems associated with this polymer and promises it hold are also discussed. It also provides introduction to the nanocomposites of polyaniline/nanoclays, and polyaniline/polyacrylic acid. As well, we have described the polymer stabilized intrinsically conducting polymer composites. The state of the art polymer stabilised intrinsically conducting composites have been reviewed. At last, we have reviewed on the CH4 gas sensing since it has been recognized as one of the inflammable gas sensors. The main problem on the CH4 gas sensor lies on its room temperature operation and detection of low ppm level concentration.
Fundamentals on Polyaniline based Composites