Volume 129, Issue 4 pp. 1726-1733
Article

Synthesis of highly loaded and well-controlled magnetic beads via emulsion polymerization

Sergei Kniajanski

Sergei Kniajanski

General Electric Global Research Center, 1 Research Circle, Niskayuna, NY 12309

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Robert E. Colborn

Robert E. Colborn

General Electric Global Research Center, 1 Research Circle, Niskayuna, NY 12309

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Brian C. Bales

Brian C. Bales

General Electric Global Research Center, 1 Research Circle, Niskayuna, NY 12309

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Orrie Riccobono

Orrie Riccobono

General Electric Global Research Center, 1 Research Circle, Niskayuna, NY 12309

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Aaron J. Dulgar-Tulloch

Aaron J. Dulgar-Tulloch

General Electric Global Research Center, 1 Research Circle, Niskayuna, NY 12309

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Judith Stein

Judith Stein

General Electric Global Research Center, 1 Research Circle, Niskayuna, NY 12309

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Binil I. I. Kandapallil

Corresponding Author

Binil I. I. Kandapallil

General Electric Global Research Center, 1 Research Circle, Niskayuna, NY 12309

General Electric Global Research Centre, 1 Research Circle, Niskayuna, 12309===Search for more papers by this author
First published: 19 December 2012
Citations: 2

Abstract

Superparamagnetic iron oxide (SPIO) incorporated polystyrene beads of uniform size distribution (∼170 nm) and high magnetic content (∼40%) are synthesized by emulsion styrene polymerization in the presence of functionalized SPIO. The role of surface functionality on the polymerization process and SPIO incorporation is investigated by carrying out styrene emulsion polymerizations with different functionalities on SPIO. A unique combination of oleic acid and (2-acetoacetoxy) ethyl methacrylate as surface ligands for SPIO is used to attain the best magnetic beads. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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