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 language | English |
---|---|
Pages (from-to) | 648-651 |
Number of pages | 4 |
Journal | Journal of Industrial and Engineering Chemistry |
Volume | 12 |
Issue number | 4 |
State | Published - Jul 2006 |
Keywords
- Block copolymer
- Dispersion polymerization
- Poly(s-b-4vp)
- RAFT method