Journal
MACROMOLECULAR RESEARCH
Volume 16, Issue 4, Pages 293-302Publisher
POLYMER SOC KOREA
DOI: 10.1007/BF03218520
Keywords
highly cross-linked; monodisperse poly(MMA) microspheres; dispersion polymerization; semi-continuous process
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In our previous publication, the problem of particle deformation and coagulation at the nucleation stage in the presence of cross-linker was intensely studied by seeded batch dispersion polymerization of methyl methacrylate (MMA). In the present work, highly cross-linked, monodisperse PMMA particles were prepared under various reaction conditions by seeded semi-continuous process. Monodisperse, 6.5 mu m-diameter PMMA particles containing up to 8 wt% of DVB or EGDMA were successfully made by seeded semi-continuous process and multi-semi-continuous addition process, respectively. Therefore, this study shows that seeded semi-continuous process is more effective and efficient to prepare highly cross-linked, monodisperse particles than non-seeded and seeded batch processes.
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