Preparation of Monodisperse Silica/PMMA Core/Shell Nanoparticles with Controllable Shell Thickness by Soap-free Emulsion Polymerization

Chem. J. Chinese Universities

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Preparation of Monodisperse Silica/PMMA Core/Shell Nanoparticles with Controllable Shell Thickness by Soap-free Emulsion Polymerization

FANG Jian-Yong, LIU Xiao-Li, LU Zi-Yang, ZHAO Chun-Shan, GAO Ge, YANG Wen-Sheng, LIU Feng-Qi^*

College of Chemistry, Jilin University, Changchun 130012, China

Received:2008-03-27 Revised:1900-01-01 Online:2008-10-10 Published:2008-10-10
Contact: LIU Feng-Qi

Abstract

Abstract: Monodisperse silica/PMMA core-shell nanoparticles were prepared by soap-free emulsion polymerization and the modified Stöber process. 3-Methacryloxy-propyltriethysilane(MPS) tailored surfaces of silica can be obtained from sol-gel preparation with Stöber process. The core-shell nanoparticles prepared from the soap-free emulsion polymerization were efficiently created with a uniform polymer shell. The shell thickness of PMMA was increased from 6.4 nm to 96.3 nm as judged by dynamic light scattering with increasing the amount of the MMA monomer. Thermogravimetric analysis result indicates the mean PMMA contents of 22.25%—93.41%. The results of SEM and TEM show a well-defined core-shell morphology for the inorganic/PMMA nanoparticles.

Key words: Soap-free emulsion polymerization, Nano-silica, Core-shell encapsulation, Poly(methyl methacrylate)(PMMA)

CLC Number:

O631

TrendMD:

FANG Jian-Yong, LIU Xiao-Li, LU Zi-Yang, ZHAO Chun-Shan, GAO Ge, YANG Wen-Sheng, LIU Feng-Qi^*. Preparation of Monodisperse Silica/PMMA Core/Shell Nanoparticles with Controllable Shell Thickness by Soap-free Emulsion Polymerization[J]. Chem. J. Chinese Universities, doi: .

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Preparation of Monodisperse Silica/PMMA Core/Shell Nanoparticles with Controllable Shell Thickness by Soap-free Emulsion Polymerization

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