Magnetosensitive organic-inorganic hybrid hydrogels

Magnetosensitive materials—organic-inorganic hybrid gels of the composition poly( N -vinylpyrrolidone)-silica nanoparticles-magnetite nanoparticles—whose native forms contain more than 80 wt % water are synthesized. Their magnetic and physicomechanical properties are studied, and the dependences of magnetization, shear modulus, and equilibrium degree of swelling are examined. It is shown that the type of magnetite nanoparticles and their amount determine the characteristics of hybrid-gel networks and affect the properties of the material.