Magnetorheological Fluids Based on Associating Polymers

Summary Magnetic fluids based on associating polymers were prepared by ultrasonic dispersing of magnetite microparticles in aqueous solutions of hydrophobically modified polyacrylamides. It was shown that the magnetic fluids containing 1–3 vol.% of Fe3O4 microparticles can be reversibly transformed to physical gels under the action of magnetic field.