Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 214, Issue 1, Pages 62-75Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201200330
Keywords
ad-miniemulsion polymerisation; clay encapsulation; highly filled nanocomposites; hybrid nanoparticles; water-based latexes
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Funding
- Mpact Limited
- Harry Crossley Foundation
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The preparation of highly filled polystyrene/Laponite (PS/Lap) hybrid nanoparticles by the ad-miniemulsion polymerisation technique, using conventional free-radical polymerisation, is described. Laponite (Lap) is first modified with a polymerisable cationic surfactant. Then, using a second surfactant dispersions are prepared under sonication. A stable hybrid miniemulsion is obtained after mixing and co-sonicating both miniemulsions. The polymerisation is conducted using an oil-soluble initiator to obtain hybrid nanoparticles. PS/Lap hybrid nanoparticles are effectively prepared with clay contents as high as 50 wt%. TEM reveals that the highly filled hybrid latexes (=30 wt%) exhibit encapsulated morphology with homogeneously distributed clay platelets.
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