Preparation and Film Properties of SiO2@P(MMA/BA/3FMA) Composite Nanoparticles

doi:10.7503/cjcu20120829

Abstract

Abstract:

Nano-SiO₂@P(MMA/BA/3FMA) core-shell composite nanoparticles were synthesized by emulsion polymerization with the modified nano-SiO₂ from tetraethyl orthosilicate(TEOS) hydrolysis as the core and the fluorinated copolymer of methyl methacrylate(MMA), n-butyl acrylate(BA) and 2,2,2-trifluoroethyl methacrylate(3FMA) as the shell. In order to overcome the agglomeration of nano-SiO₂ particles and to improve the chemical integration to the shell copolymer, vinyltrimethoxysilane(VTMS) was used as the surface modifier for nano-SiO₂ particles. Fourier transforms infrared spectroscopy(FTIR), transmission electron microscope(TEM), dynamic light scattering(DLS), static contact angles(SCA), X-ray photoelectron spectroscopy(XPS) and thermogravimetric analysis(TGA) were employed to characterize the structures of the composite nano-particles and the film properties. The results indicated that SiO₂@P(MMA/BA/3FMA) composite presented the uniform spherical core-shell partials with 40—50 nm in diameter. 25%(Mass fraction) 3FMA gave the lowest surface energy due to the migration of fluorine to the surface during the film formation. The thermal behavior of SiO₂@P(MMA/BA/3FMA) was improved with the increase of 3FMA content.

Key words: SiO₂, Core-shell, Fluorinated acrylate copolymer, Composite nanoparticles, Film property

CLC Number:

O631

TrendMD:

PAN Ai-Zhao, HE Ling, ZHANG Wen-Wei. Preparation and Film Properties of SiO₂@P(MMA/BA/3FMA) Composite Nanoparticles[J]. Chem. J. Chinese Universities, 2013, 34(4): 1007.

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Preparation and Film Properties of SiO₂@P(MMA/BA/3FMA) Composite Nanoparticles

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