Facile fabrication of siloxane @ poly (methylacrylic acid) core-shell microparticles with different functional groups
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Siloxane @ poly (methylacrylic acid) core-shell microparticles with functional groups were prepared by a facile hydrolysis-condensation method in this work. Three different silane coupling agents 3-methacryloxypropyltrimethoxysilane (MPS), 3-triethoxysilylpropylamine (APTES), and 3-glycidoxypropyltrimethoxysilane (GPTMS) were added along with tetraethoxysilane (TEOS) into the polymethylacrylic acid (PMAA) microparticle ethanol dispersion to form the Si@PMAA core-shell microparticles with different functional groups. The core-shell structure and the surface special functional groups of the resulting microparticles were measured by transmission electron microscopy and FTIR. The sizes of these core-shell microparticles were about 350–400 nm. The corresponding preparation conditions and mechanism were discussed in detail. This hydrolysis-condensation method also could be used to functionalize other microparticles which contain active groups on the surface. Meanwhile, the Si@PMAA core-shell microparticles with carbon-carbon double bonds and amino groups have further been applied to prepare hydrophobic coatings.
KeywordsSiloxane Poly (methylacrylic acid) Core-shell Microparticle Functional Coating
This work was supported by the National Natural Science Foundation of China (NSFC) with grant number 21174029, the Industry Academia Cooperation Innovation Fund of Jiangsu Province with grant number BY2014127-07, and the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) with grant number 1107047002.
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Conflict of interest
The authors declare that they have no conflict of interest.
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