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Facile Preparation of Crosslinked Polymeric Nanocapsules via Combination of Surface-Initiated Atom Transfer Radical Polymerization and Ultraviolet Irradiated Crosslinking Techniques

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Author(s): Mu Bin | Shen Ruoping | Liu Peng

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 4;
Issue: 7;
Start page: 773;
Date: 2009;
Original page

Keywords: Crosslinked polymeric nanocapsules | Template | Surface-initiated atom transfer radical polymerization | Ultraviolet irradiation

ABSTRACT
Abstract A facile approach for the preparation of crosslinked polymeric nanocapsules was developed by the combination of the surface-initiated atom transfer radical polymerization and ultraviolet irradiation crosslinking techniques. The well-defined polystyrene grafted silica nanoparticles were prepared via the SI-ATRP of styrene from functionalized silica nanoparticles. Then the grafted polystyrene chains were crosslinked with ultraviolet irradiation. The cross-linked polystyrene nanocapsules with diameter of 20–50 nm were achieved after the etching of the silica nanoparticle templates with hydrofluoric acid. The strategy developed was confirmed with Fourier transform infrared, thermogravimetric analysis, and transmission electron microscopy.
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