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Updated: Sep 24, 2025
Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Clouding observed for surface active, mPEG-grafted silica nanoparticles
Sanna Björkegren1,2, Lars Nordstierna1, Andreas Sundblom2
1Department of Chemistry and Chemical Engineering, Chalmers University of Technology SE-412 96 Göteborg Sweden.
Abstract:
Temperature-dependent phase-separation, clouding, has been observed in suspensions of silica nanoparticles surface-functionalized with methyl-poly(ethylene glycol) silane. Interparticle interactions and conformational changes of the grafted poly(ethylene glycol) chains influence the observed cloud points, and can be controlled by electrolyte concentration and pH. These findings open new routes to tailoring properties of Pickering emulsions.
