Polyacrylate/SiO 2 nanocomposites prepared by combining non-aqueous sol–gel process and miniemulsion polymerization
作者： Lei Yang , Yongshen Xu , Shouji Qiu , Ya Zhang
DOI: 10.1007/S10965-012-0030-3
关键词:
摘要: In this paper, Polyacrylate/SiO2 nanocomposites were successfully prepared by combining non-aqueous sol–gel process of traethylorthosilicate (TEOS) and miniemulsion polymerization acrylates. Firstly, the kinetics TEOS with formic acid (FA) as catalyst was studied, which indicated that it beneficial to obtain spherical silica sol particles when molar ratio FA above 6. According kinetics, in situ modified 3-methacryloxypropyltrimethoxysilane (MPTMS), then presence sol, acrylate conducted finally nanocomposite emulsion obtained. The discussed measuring conversion rate monomers. diameters morphologies composite latex analyzed Nano particle analyzer Transmission electron microscopy (TEM). Mechanical properties glass transition temperatures (Tg) films characterized tensile test differential scanning calorimetry (DSC). results showed similar normal polymerization, however introduction reduced homogeneity stability monomer droplets, diameter size distribution increased increasing content silica. core-shell structures encapsulated polyacrylate. nano-silica improved mechanical Tg films.
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