Microemulsions with polymerizable surfactants. γ-ray induced copolymerization of styrene and 11-(acryloyloxy)undecyl(trimethyl)ammonium bromide in three-component cationic microemulsion
✍ Scribed by Michael Dreja; Bernd Tieke
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 435 KB
- Volume
- 17
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
Styrene and the cationic surfactant 11‐(acryloyloxy)undecyl(trimethyl)ammonium bromide (AUTMAB) form transparent, globular microemulsions in water without any addition of a cosurfactant. Upon γ‐irradiation, the two monomers copolymerize at room temperature and form nanolatex particles of about 21 nm in diameter consisting of a copolymer with a mole ratio of styrene to surfactant of approximately 1.5:1. Excess surfactant is polymerized in the micellar solution by formation of homopolymer. A structure model is presented taking into account that the surfactant most likely forms the particle shell. Due to the polar, covalently bonded shell the polymer particles can be easily redispersed.