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Preparation of Highly Cross-linked, Monodisperse Poly(methyl methacrylate) Microspheres by Dispersion Polymerization; Part I. Batch Processes  

Lee, Ki-Chang (Department of Polymer Sci. & Eng., Engineering Research Institute, Gyeongsang National University)
Lee, Sang-Yun (Department of Polymer Sci. & Eng., Engineering Research Institute, Gyeongsang National University)
Publication Information
Macromolecular Research / v.15, no.3, 2007 , pp. 244-255 More about this Journal
Abstract
Nucleation is the most sensitive stage in the preparation of highly cross-linked, monodisperse microspheres by dispersion polymerization, since the addition of a small amount of cross-linker results in particle deformation and coagulation. To overcome these problems, $5\;{\mu}m$ poly(methyl methacrylate) seed particles prepared by dispersion polymerization were used in the preparation of mono disperse, cross-linked PMMA particles containing up to 7 wt% divinylbenzene by seeded batch dispersion polymerization. Spherical particles with a narrow size distribution containing up to 8 wt% of EGDMA were prepared by seeded multi-batch dispersion polymerization processes. These particles were identified by scanning electron microscopy and DSC.
Keywords
cross-linked particle; dispersion polymerization; seeded batch process; MMA;
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Times Cited By Web Of Science : 13  (Related Records In Web of Science)
Times Cited By SCOPUS : 12
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