▎ 摘　　要

NOVELTY - Obtaining polyaniline/reduced graphene oxide composites involves dispersing graphene oxide in acid aqueous solution containing anionic emulsifying agent to obtain graphene oxide dispersion; dissolving at least one oligomer of aniline (optionally substituted) in organic solvent to obtain oligomer solution; and mixing the oligomer solution with the dispersion of graphene oxide. USE - For obtaining polyaniline/reduced graphene oxide composites useful as conductive ink for electronic devices (claimed), or in electric and electronic applications, such as thermoelectric, electrochemical, electromagnetic, electromechanical, electroluminescent, electrorheological and chemical, and for producing membranes and sensors. ADVANTAGE - The method prepares composites of polyaniline and reduced graphene oxide from low toxicity reagents. It is quick and simple method than the known methods, which allows product to be obtained with high regularity and allows the preparation of stable polyaniline/reduced graphene solutions for applications such as flexible electronics obtained by inkjet printing. The present method allows composite to be obtained in the form containing chains of polyaniline having greater regularity since the oligomer origin reduces the statistical probability of branching in the ortho position of aniline which is also reduced by steric effect; the product thus obtained, appreciations to the presence of emulsifier which separates the sheets of reduced graphene oxide (rGO) and binds polyaniline to graphene, forms stable solutions also in organic solvents such as dimethylsulfoxide (DMSO), hence simplifying the end use as ink in inkjet printing techniques. The method that uses aniline as a starting monomer, polymerization from oligomers, preferably dimers, does not entail the use of toxic reagents, making the reaction easier to perform. The use of oligomers allows concentration of the reduced graphene oxide in final composite to be modulated so that use can be limited to the quantity strictly necessary, thus permitting variation in the conductivity (which diminishes as the quantity of graphene diminishes) of composite to the type of application required.