Colloidal Silica Dispersions In Aqueous Media: Nanoparticle Surface Modification by Amphiphilic Polymers and Organic Solvents

Thursday, October 20, 2011: 8:55 AM
101 A (Minneapolis Convention Center)
Biswajit Sarkar, Vinithra Venugopal, Andrew Bodratti, Marina Tsianou and Paschalis Alexandridis, Department of Chemical and Biological Engineering, University at Buffalo - The State University of New York (SUNY), Buffalo, NY

We consider colloidal dispersions of silica nanoparticles in aqueous media containing poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) amphiphilic block copolymers (Pluronics), with a specific interest on how solution conditions such as temperature, pH, and the presence of polar organic solvents affect the amphiphile organization on the nanoparticle surface and the ensuing interactions between nanoparticles.

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See more of this Session: Colloidal Dispersions I
See more of this Group/Topical: Engineering Sciences and Fundamentals