Macromolecular Research

  • 제16권4호
  • /
  • Pages.293-302
  • /
  • 2008
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  • 1598-5032(pISSN)
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  • 2092-7673(eISSN)
한국고분자학회 (The Polymer Society of Korea)
권호 표지

Preparation of Highly Cross-Linked, Monodisperse Poly(methyl methacrylate) Microspheres by Dispersion Polymerization; Part II. Semi-continuous 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)
  • 발행 : 2008.06.30
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초록

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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