Amphiphilic silica nanoparticles were prepared by organic amine-catalyzed hydrolysis of TEOS and in-situ surface modification used silane coupling agent.Stable Pickering miniemulsion was prepared by using the as-prepared SiO2 nanoparticles as Pickering emulsifier.Inorganic polymer composite hollow microspheres were successfully synthesized.The products were characterized by fourier-transformed infrared spectroscopy (FT-IR),transmission electron microscopy (TEM),scanning electron microscopy (SEM) and thermogravimetric analysis (TGA).The results showed that the microspheres with diameter between 1.5～2μm were successfully synthesized when the initiator was 2,2′-azobis(2,4-dimethylvaleronitrile) and the amount of crosslinking agent was 0.2%.The low temperature initiator was favorable for the synthesis of hollow microspheres with uniform particle size.The amount of cross-linking agent had effect on the particle size of microspheres.Different monomer types also affected the particle size distribution of the as-prepared microspheres.
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基金资助
安徽省自然科学基金(1408085MKL19)
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