Polymer-induced recovery of nanoparticles from microemulsions

A new isothermal approach to the recovery of inorganic nanoparticles (NPs) is demonstrated. The NPs can be incorporated into a background microemulsion (ME) supporting fluid, and they can be recovered by addition of non-adsorbing polymer. A clean liquid-liquid (L-L) phase transition can be readily i...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2011-02, Vol.13 (8), p.3059-3063
Main Authors: Myakonkaya, Olesya, Eastoe, Julian, Mutch, Kevin J, Grillo, Isabelle
Format: Article
Language:English
Subjects:
Emulsions - chemistry
Fluid dynamics
Fluid flow
Fluids
Microemulsions
Nanoparticles
Nanoparticles - chemistry
Neutron Diffraction
Phase transformations
Phase Transition
Polymers - chemistry
Recovery
Scattering, Small Angle
Solvents
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Summary:A new isothermal approach to the recovery of inorganic nanoparticles (NPs) is demonstrated. The NPs can be incorporated into a background microemulsion (ME) supporting fluid, and they can be recovered by addition of non-adsorbing polymer. A clean liquid-liquid (L-L) phase transition can be readily induced by addition of polymer to the MEs. Furthermore, the L-L transitions are also observed in the presence of added NPs, but now the nanoparticles concentrate in the lower co-existing ME phases. Once recovered, the NPs can be redispersed by adding extra ME as a solvent.
ISSN:1463-9076
1463-9084
DOI:10.1039/c0cp00736f