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J Colloid Interface Sci. 2013 Dec 1;411:98-104. doi: 10.1016/j.jcis.2013.08.042. Epub 2013 Sep 3.

Synthesis of organic-inorganic hybrid microspheres and the corresponding mesoporous silica nanoparticles.

Author information

  • 1Key Laboratory of Functional Polymer Materials, The Ministry of Education, Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China.

Abstract

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.

Copyright © 2013 Elsevier Inc. All rights reserved.

KEYWORDS:

Distillation–precipitation polymerization; Mesoporous silica microspheres; Organic–inorganic hybrid microspheres

PMID:
24055252
[PubMed]
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