FIELD: technological processes.
SUBSTANCE: invention relates to the field of nanocomposite materials based on electroactive polymers with a conjugation system and magnetic nanoparticles Fe3O4, fixed on carbon nanotubes. Nanocomposite magnetic material includes polymer-polydiphenylamine-2-carboxylic acid (PDPAA) and single-walled carbon nanotubes (SCNT), on which nanoparticles Fe3O4 when the content of Fe3O4 nanoparticles in the material 1–53 mass. % of PDPAA and SCNT of 1–3 mass.% of the monomer. In a method for producing a nanocomposite magnetic material in situ by oxidizing polymerization of a monomer on the surface of a nanocomposite of Fe3O4/SCNT in the presence of an aqueous oxidant solution, as the monomer, diphenylamine-2-carboxylic acid (DPAA) is used. Nanoparticles of Fe3O4 are fixed on the surface of SCNT by hydrolysis of a mixture of iron (II) and (III) salts in a molar ratio of 1:2 in a solution of ammonium hydroxide in the presence of SCNT. This monomer is dissolved in a mixture of an organic solvent – chloroform and NH4OH, taken in a volume ratio of 12:1, to a monomer concentration in the solution of 0.05–0.2 mol/l and before oxidative polymerization is added to a solution of a Fe3O4, fixed on the surface of SCNT.
EFFECT: nanocomposite material of the invention has simultaneously electrically conductive and superparamagnetic properties, high homogeneity and thermal stability and saturation magnetization, as well as the ability to form stable magnetic fluids, which makes it possible to effectively use it in organic electronics and electrorheology, for the creation of sensors and nanoprobes, electrochemical current sources, rechargeable batteries, sensors and biosensors, supercapacitors, solar cells and other electrochemical devices.
2 cl, 1 tbl, 12 dwg
