Influence of Particle Surface Charge and Shape on the Rheology and Microstructure of Worm-like Micellar Solutions.

The influence of the size, shape, and surface chemistry of charged nanoparticles on the rheology and microstructure of worm-like micellar (WLM) solutions is investigated. The WLM solutions considered in this work are formulated from CTAB (cetyltrimethylammonium bromide), a cationic surfactant, and sodium nitrate (NaNO). The addition of negatively charged particles decreased the viscoelastic properties (zero-shear viscosity and relaxation time of the micelles) of the WLM solutions.