Dispersion polymerization of MMA using polystyrene-block-poly(4- vinylpyridine) prepared by a RAFT

Jung Min Lee, Sang Eun Shim, Soonja Choe

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Poly(methyl methacrylate) (PMMA) particles were produced through dispersion polymerization using poly(styrene)-block-poly(4-vinylpyridine) block copolymer as a steric stabilizer in methanol. Low-molecular-weight-distribution block copolymers were synthesized using 4-toluic acid dithiobenzoate through a reversible addition-fragmentation chain transfer (RAFT) method. Stable polymer particles were obtained when the block copolymer concentration was 1, 4, or 10 wt% relative to monomer. The average particle size (2.4 -3.4 μm) varied depending on the concentration of the block copolymer. As the block copolymer concentration increased, the size of the particles decreased. In particular, 4 wt% of the block copolymer produced 2.7 μm monodisperse PMMA (Cv= 3.3 %). The existence of the block copolymer on the PMMA surface was verified through XPS measurements.

Original languageEnglish
Pages (from-to)648-651
Number of pages4
JournalJournal of Industrial and Engineering Chemistry
Volume12
Issue number4
StatePublished - Jul 2006

Keywords

  • Block copolymer
  • Dispersion polymerization
  • Poly(s-b-4vp)
  • RAFT method

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