Rheological Properties of Superparamagnetic Iron Oxide Nanoparticles

The present study focuses on the rheological properties of polyethylene glycol (PEG) modified, positively charged, and negatively charged superparamagnetic iron oxide nanoparticles (SPIONs) at different temperatures. We hypothesized that surface these in water did not affect their properties. These had same as SPIONs-PEG to charge whereas ones with amine carboxyl groups surfaces positive negative charges, respectively. However, behaviors were from each other. comparative SPIONs revealed pseudo-Newtonian behavior. viscosity decreased increase temperature. At low shear rates, stress was independent rate increased rate. Moreover, high for PEG-SPIONs more than those SPIONs. measurements also samples strain observed all amount stress, which indicated exact resistance deformation. Furthermore, modulus time nanoparticles. results suggest are promising candidates appropriate fluid processing applications drug vectors biomedical applications.