Rheological properties of water-based magnetic fluid and its emulsion

Field-induced rheological properties were studied for pure magnetic fluids (MFs) and 5% MF-cetyltrimethylammonium bromide (CTABr) emulsion for varying CTABr concentration (0-0.1 M) at different temperatures. The zero-field rheological study for 5% MF-CTABr emulsion shows maximum viscosity for 0.01 M CTABr concentrations. In-field viscosity results for 0.01 M CTABr-MF emulsion shows nearly 10 times more change in viscosity than the pure fluid, indicating the interaction between micelles and magnetic particles.