(643g) Synthetic Process Engineered Polyaniline Nanostructures

Polyaniline as a unique conjugated polymer has attracted much interest due to its tunable doping level and its wide applications such as gas sensor, anticorrosion, and toxic reduction in water. However, the application is largely restricted by its limited solubility in common solvents. Even worse, the lower thermal degradation temperature than the melting temperature prevents the melting process as used for thermoplastics. Researches on the nanostructure polyaniline significantly enhance the applications of polyaniline, however, the traditional synthetic ways to obtain polyaniline nanostructures are limited by the used template and the low yield cannot meet the demand for industrial-scale applications. Interfacial polymerization is a more convenient way to produce polyaniline nanofibers, without using any template or additional reagent. Here, three methods are used to synthesize polyaniline at different synthetic conditions, which affect the quality of polyaniline nanostructures. Polyaniline nanofibers obtained by interfacial polymerization is studied and compared with polyaniline prepared by ultrasonic stirring and polymer acid methods. For polyaniline nanofibers, the effects of reaction time, interfacial area size, scale and concentration of the reactant on the crystalline structure, thermal stability, morphology, conductivity and dielectrical property are systematically studied and will be reported.