POLY 480 |
| Control of properties in ferromagnetic colloids has been achieved by variation of composition and functionality of polymer surfactants used to prepare nanoparticles. Through nitroxide mediated polymerization (NMP), well-defined polymers with precise composition and functionality were obtained and subsequently used as surfactants for the preparation of ferromagnetic cobalt nanoparticles. A systematic investigation of the effect of surfactant structure on particle size and morphology of magnetic colloids was conducted by variation of polymer molecular weight and composition. A dramatic effect of surfactant molar mass on the stability of colloidal dispersions in organic solvents was observed. Using NMP, various functionalized monomers were copolymerized to yield polymer surfactants for use in the preparation of functionalized magnetic nanoparticles. |
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Nanoparticles and Microparticles: Synthesis and Applications
6:00 PM-8:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster
Sci-Mix
Division of Polymer Chemistry |