NOVEL SELF-DOPED WATER-SOLUBLE POLYANILINE GRAFT COPOLYMER OBTAINED BY GRAFT COPOLYMERIZATION OF ANILINE MONOMER AND POLY(STYRENESULFONIC ACID) MAIN CHAIN, ITS PREPARATION METHOD, AND ITS USE

摘要

PURPOSE: Provided are a novel self-doped polyaniline graft copolymer whose main chain acts as a dopant and simultaneously allows the copolymer to be soluble in water, whose polyaniline branch prevents the mass phase separation between polyanilines and whose doping and dedoping processes occur reversibly according to pH, its preparation method, and its use as an antistatic agent, an electromagnetic screening product, a secondary battery electrode material, a coating layer and a sensor. CONSTITUTION: The polyaniline graft copolymer is represented by the formula I. Preferably the copolymer has an aniline repeating unit of 1-400, is soluble in water and is self-doped. The method comprises the step of reacting the poly(styrenesulfonic acid-co-aminostyrene) random copolymer represented by the formula II with aniline to prepare the polyaniline graft copolymer of the formula I, wherein n is 1-5,000 and m is 1-1,000.