Rheological Behavior of Hybrid Solution of Fumed Silica Nanoparticles and Partially Hydrolyzed Polyacrylamide

Ehsan Aliabadian



This presentation shows that Viscoelastic properties of hybrid polymer/silica quantified based on frequency sweep;  Lissajou curves of two different polymers and two different silica Nano particles are plotted and nonlinear behavior were analyzed;  Between completely hydrophilic and slightly hydrophobic silica nanoparticles (Aerosil 300 & Aerosil 816) the latter one can have more strong hydrogen bonding between carboxyl group of polymer and hydroxyl on silica surface;  We have three different stages for AEROSIL 816 and HPAM polymers: low concentration (0-1 wt.%), intermediate concentration (1-3 wt.%) and high concentration (> wt. 3%).