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|Title:||Preparation of hollow silica nanospheres by surface-initiated atom transfer radical polymerization on polymer latex templates|
|Source:||Chen, Y., Kang, E.-T., Neoh, K.-G., Greiner, A. (2005-01). Preparation of hollow silica nanospheres by surface-initiated atom transfer radical polymerization on polymer latex templates. Advanced Functional Materials 15 (1) : 113-117. ScholarBank@NUS Repository. https://doi.org/10.1002/adfm.200400179|
|Abstract:||Poly(vinylbenzyl chloride), (PVBC) latex particles of about 100 nm in size are prepared by emulsion polymerization. Silyl functional groups are introduced onto the PVBC-nanoparticle templates via surface-initiated atom transfer radical polymerization of 3-(trimethoxysilyl)propyl methacrylate. The silyl groups are then converted into a silica shell, approximately 20 nm thick, via a reaction with tetraethoxysilane in ethanolic ammonia. Hollow silica nanospheres are finally generated by thermal decomposition of the PVBC template cores. Field-emission scanning electron microscopy and field-emission transmission electron microscopy are used to characterize the intermediate products and the hollow nanospheres. Fourier-transform infrared spectroscopy results indicate that the polymer cores are completely decomposed.|
|Source Title:||Advanced Functional Materials|
|Appears in Collections:||Staff Publications|
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