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Polymer/Ag composite microspheres produced by water-in-oil-in-water emulsion polymerization and their application for a preservative

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Nanosized Ag particles were entrapped successfully in multihollow porous poly(methyl methacrylate) (PMMA) microspheres by water-in-oil-in-water emulsion polymerization. The structure of the PMMA/Ag microspheres prepared was characterized by scanning electron microscopy and X-ray powder diffraction analysis. It was found that the Ag nanoparticles were impregnated in the inner voids of the microspheres and they had a face-centered cubic structure. In the preservation test, the PMMA/Ag microspheres showed a powerful antibacterial performance, indicating that the Ag ions released effectively through the nanosized pore channel of the PMMA wall.

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This work was supported in part by the National Research Laboratory program (project no. 2000-N-NL-01-C-270) of the Ministry of Science and Technology, South Korea.

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Correspondence to Kyung-Do Suh.

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Lee, JE., Kim, JW., Jun, JB. et al. Polymer/Ag composite microspheres produced by water-in-oil-in-water emulsion polymerization and their application for a preservative. Colloid Polym Sci 282, 295–299 (2004).

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