화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.15, No.3, 244-255, April, 2007
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Preparation of Highly Cross-linked, Monodisperse Poly(methyl methacrylate) Microspheres by Dispersion Polymerization; Part I. Batch Processes
Ki-Chang Lee†, and Sang-Yun Lee
  • Department of Polymer Sci. & Eng., Engineering Research Institute, Gyeongsang National University, Jinju 660-701, Korea
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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 μm poly(methyl methacrylate) seed particles prepared by dispersion polymerization were used in the preparation of monodisperse, 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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