期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 411, 期 -, 页码 98-104出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2013.08.042
关键词
Organic-inorganic hybrid microspheres; Distillation-precipitation polymerization; Mesoporous silica microspheres
资金
- NSFC [21174065]
- Tianjin Science Technology Research Funds of China [11JCYBJC02100]
- PCSIRT [IRT1257]
Poly(methacrylic acid-co-3-(methacryloxy)propyltrimethoxysilane) (P(MAA-co-MPS)) organic-inorganic hybrid microspheres were prepared by distillation-precipitation copolymerization of MAA and MPS in acetonitrile in absence of any surfactant and additive. The resultant hybrids had a spherical shape when the MPS inorganic precursor was varied from 0% to 60% in the comonomers during the polymerization. The hybrid microspheres can be facilely cross-linked via the hydrolysis of methoxy groups of polyMPS network and further self-condensation of the hydroxyl groups of silanols. As a result, the hybrid microspheres were facilely converted to mesoporous silica particles via the removal of the organic component through calcination. The narrow dispersed mesoporous silica had a high surface area of 554.2 m(2)/g as well as the average pore size of 8 nm and pore volume of 0.24 cm(3)/g. The corresponding microspheres were characterized by TEM, FT-IR, TGA, and nitrogen sorption-desorption. (C) 2013 Elsevier Inc. All rights reserved.
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