Abstract
The polyaniline (PANI) dispersions have been prepared in acidic aqueous media by oxidative dispersion polymerization in the presence of a polymeric stabilizer. The polymeric stabilizer used in this study is the poly(methyl vinyl ether-alt-maleic acid) (PMVEMA) which contains acid groups (-COOH). The PANI-PMVEMA particles have a uniform size and a spherical shape. The PANIPMVEMA dispersions show almost no desorption of the PMVEMA, even though the sonication at 500 W for 20 min and the centrifugation at 500 rpm for 60 min are performed 10 times. The existence of the PMVEMA on the surface is confirmed by X-ray photoelectron spectroscopy. The dispersion stability of the PANI-PMVEMA dispersions is extensively influenced by ζ potential which was governed by the acid group (-COOH) of the PMVEMA on the PANIPMVEMA particle surface. (C) 2000 Academic Press.
| Original language | English |
|---|---|
| Pages (from-to) | 316-321 |
| Number of pages | 6 |
| Journal | Journal of Colloid and Interface Science |
| Volume | 227 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2000 Jul 15 |
| Externally published | Yes |
Keywords
- Poly(methyl vinyl ether-alt-maleic acid)
- Polyaniline dispersion
- Stabilization
- ζ potential
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Surfaces, Coatings and Films
- Colloid and Surface Chemistry