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In situ emulsion copolymerization of methyl methacrylate and butyl acrylate in the presence of SiO2 with various surface coupling densities

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Abstract

Poly(methyl methacrylate-co-butyl acrylate) (poly(MMA-co-BA))/SiO2 nanocomposite particles with various morphologies were prepared through in situ emulsion copolymerization of methyl methacrylate and butyl acrylate using surface 3-(methacryloyloxy) propyl trimethoxysilane (MPS)-modified SiO2 nanoparticles as nanofillers. The surface MPS-coupling density of SiO2 nanoparticles could influence the hydrophilic–lipophilic properties of SiO2 nanoparticles and subsequently influence the particle morphology of poly(MMA-co-BA)/SiO2 nanocomposite particles. With the increase of the surface MPS-coupling density of SiO2 nanoparticles, the morphology of nanocomposite particles changed from a raspberry-like one to a guava-like one. A formation mechanism of nanocomposite particles with various morphologies was proposed on the basis of the results of polymerization kinetics, particle size evolution in the process of polymerization, and particle size and morphology of the final nanocomposite particles.

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Acknowledgments

The financial support from the National Natural Science Foundation of China (NNSFC) project (51003023 and 51273182), Science and Technology Department of Zhejiang Province (2014C31053), Zhejiang Province’s Xinmiao Talent Plan (2013R421041 and 2014R406034), and National Undergraduate Training Programs for Innovation and Entrepreneurship of China (201310346013) are gratefully acknowledged.

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Correspondence to Zhihai Cao.

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Qi, D., Liu, C., Chen, Z. et al. In situ emulsion copolymerization of methyl methacrylate and butyl acrylate in the presence of SiO2 with various surface coupling densities. Colloid Polym Sci 293, 463–471 (2015). https://doi.org/10.1007/s00396-014-3433-3

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  • DOI: https://doi.org/10.1007/s00396-014-3433-3

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