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Microemulsions with polymerizable surfactants. γ‐ray induced copolymerization of styrene and 11‐(acryloyloxy)undecyl(trimethyl)ammonium bromide in three‐component cationic microemulsion
Author(s) -
Dreja Michael,
Tieke Bernd
Publication year - 1996
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.1996.030171110
Subject(s) - cationic polymerization , microemulsion , copolymer , styrene , polymer chemistry , ammonium bromide , pulmonary surfactant , monomer , bromide , materials science , polymer , polymerization , micelle , chemistry , organic chemistry , aqueous solution , composite material , biochemistry
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.