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Synthesis of Raspberry-Like SiO2/Polystyrene Nanocomposite Particles via Miniemulsion Polymerization

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Abstract:

Raspberry-like silica/polystyrene nanocomposite particles, silica particle as core and polystyrene nodules as shell, were synthesized through miniemulsion polymerization by using sodium dodecyl sulfate surfactant, hexadecane costabilizer in the presence of silica particles modified by methacryloxy(propyl)trimethoxysilane (MAPTMS) or n-octadecyltrimethoxysilane (ODMS). In this unique process, it was found that the raspberry-like silica/polystyrene nanocomposite particles could be obtained based on MAPTMS grafted silica particles at high grafted density 6.7 μmol/m2. And such nanocomposite particles could possess bigger shape stability due to coordinate effect of both the polymerizable group and hydrophobic interaction provided by MAPTMS molecules. Formation mechanism of the morphology was discussed.

Keywords: MINIEMULSION POLYMERIZATION; NANOCOMPOSITE; RASPBERRY-LIKE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2009.C205

Publication date: February 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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