Preparation of raspberry-like PMMA/SiO2 nanocomposite particles |
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Authors: | Min Chen Bo You Shuxue Zhou Limin Wu |
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Institution: | (1) Department of Materials Science, Fudan University, Shanghai, 200433, China |
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Abstract: | Water-borne raspberry-like PMMA/SiO2 nanocom-posite particles were prepared via free radical copolymerization of methyl methacrylate (MMA) with 1-vinylimidazole
(1-VID) in the presence of ultrafine aqueous silica sols. The acid-base interaction between hydroxyl groups (acidic) of silica
surfaces and amino groups (basic) of 1-VID was strong enough for promoting the formation of long-standing stable PMMA/SiO2 nanocomposite particles when 10 mol% or more 1-VID as auxiliary monomer was used. The average particle sizes and the silica
contents of the nanocomposite particles were in the ranges from 120–330 nm and 15%–20%, respectively. TEM and SEM observations
indicated a raspberry-like morphology of the obtained nanocomposite particles.
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Translated from Chemical Journal of Chinese Universities, 2005, 26(7) (in Chinese) |
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Keywords: | raspberry-like structure nanocomposite particles nano-SiO2 |
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