Abstract
Poly(methylstyrene) (PMS) latex particles in an emulsifier-free emulsion were first synthesized by using 2,2′-azobis-(2-amidinopropane) dihydrochloride (V-50) as an initiator. Purification of the latexes by dialysis was followed in order to remove residual monomer, initiator and electrolytes. The cationic poly(methylstyrene) latexes were then oxidized in the presence of t-butyl hydroperoxide catalyzed by copper chloride at 60°C under air. The degree of oxidation increased with reaction time, but the emulsions of highly oxidized poly(methylstyrene) latexes were found to be unstable. An increase of oxidant concentration enhanced the rate of oxidation, while the catalyst concentration had little influence on it. The effect of reaction temperature and pH value on the catalytic oxidation of poly(methylstyrene) latexes was also investigated.
| Original language | English |
|---|---|
| Pages (from-to) | 363-366 |
| Number of pages | 4 |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 153 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 15 Aug 1999 |
| Event | Proceedings of the 1997 7th Iketani Conference - International Symposium on Advanced Technology of Fine Particles - Yokohama, Japan Duration: 12 Oct 1997 → 16 Oct 1997 |
Keywords
- Catalytic oxidation
- Emulsifier-free emulsion
- Functional latex particles
- Poly(methylstyrene)
ASJC Scopus subject areas
- Colloid and Surface Chemistry