EFFECT OF WATER ON ADSORPTION BEHAVIOR AT POLYMER GAMMA-FE2O3 INTERFACE

The adsorption behavior of a hydroxylated polymer onto gamma-Fe2O3 par ticles in a tetrahydrofuran/water solvent system was investigated. The saturation adsorption of the polymer decreased with an increase in th e water content of the solvent system, and the degree of dispersion of the magnetic particles in the paint also decreased. It was shown that the water located not at the interface between the particles and the solution but in the solution. Water interacted with the polymer and in creased the radius of gyration of the polymer in solution. Thus, the p olymer did not interact with the particles, and the particles were pre vented from having a high dispersion.