PRODUCTION OF AQUEOUS POLYANILINE DISPERSION AND CONDUCTIVE POLYMER MATERIAL PREPARED BY USING SAME

摘要

PURPOSE:To obtain an aqueous polyaniline dispersion which is easily moldable and stable and gives a molding of a high electrical conductivity by oxidatively polymerizing an aniline compound in the presence of a dispersant or a surfactant. CONSTITUTION:An aqueous polyaniline dispersion is obtained by oxidatively polymerizing an aniline compound in an aqueous medium in the presence of at least one compound selected from among dispersants [a nonionic polymer (e.g. dextran) and an amphoteric polymer (e.g. gelatin)] and surfactants (cationic, anionic and nonionic surfactants) [in an amount of 1-300wt.%, desirably 5-200wt.%, based on the aniline compound, dispersant or 0.01-50wt.%, desirably 0.1-20wt.% surfactant] by using an oxidation catalyst such as FeCl3 (in a catalyst to aniline compound molar ratio of 0.01-10, desirably 1-5). The reaction temperature in the oxidative polymerization is 0-100 deg.C, desirably 5-50 deg.C, and the reaction time is desirably 1-50hr. The formed water is removed from this aqueous dispersion, and the residue is dried to obtain a conductive film.