Journal
JOURNAL OF NANOMATERIALS
Volume 2016, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2016/1730403
Keywords
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Funding
- National Research Foundation of Korea Grant - Korean Government [NRF-2014S1A2A2027641]
- Ministry of Science, ICTFuture Planning [2014-A002-0065]
- KU Brain Pool of Konkuk University
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This paper presents a facile method for preparation of silica coated monodisperse superparamagnetic microsphere. Herein, monodisperse porous polystyrene-divinylbenzene microbeads were prepared by seeded emulsion polymerization and subsequently sulfonated with acetic acid/H2SO4. The as-prepared sulfonated macroporous beads were magnetized in presence of Fe2+/Fe3+ under alkaline condition and were subjected to silica coating by sol-gel process, providing water compatibility, easily modifiable surface form, and chemical stability. FE-SEM, TEM, FT-IR, and TGA were employed to characterize the silica coated monodisperse magnetic beads (similar to 7.5 mu m). The proposed monodisperse magnetic beads can be used as mobile solid phase particles candidate for protein and DNA separation.
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