Abstract
Crosslinked polystyrene microspheres with novel surface and inner morphologies were synthesized by seeded polymerization following a seed-swelling method, using uncrosslinked polystyrene microspheres as seeds and a mixture of toluene, styrene (St), and divinylbenzene (DVB) as the swelling agent. With the increasing toluene/(St + DVB) ratio, the crosslinked particles changed from smooth-surfaced spheres to deformed spheres with dimples or heavy dents at the surface. A single hole inside the spherical particles was produced at low St/DVB ratio, while higher St/DVB ratios gave irregular dented or dimpled particles. Ultrathin cross-section observation by TEM revealed a non-uniformly crosslinked inner structure.
| Original language | English |
|---|---|
| Pages (from-to) | 655-661 |
| Number of pages | 7 |
| Journal | Colloid and Polymer Science |
| Volume | 276 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 1998 |
Scopus Subject Areas
- Physical and Theoretical Chemistry
- Polymers and Plastics
- Colloid and Surface Chemistry
- Materials Chemistry
Keywords
- Crosslinked microsphere
- Dispersion polymerization
- Morphology
- Seed-swelling