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Self‐assembly of ionic amphiphiles on polyelectrolyte chains
Author(s) -
Kabanov Victor A,
Zezin Alexander B,
Kasaikin Victor A,
Zakharova Julia A,
Litmanovich Ekaterina A,
Ivleva Elena M
Publication year - 2003
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1340
Subject(s) - polyelectrolyte , micelle , sodium dodecyl sulfate , pulmonary surfactant , chemistry , chemical engineering , amphiphile , ionic bonding , vesicle , dynamic light scattering , polymer chemistry , ion , inorganic chemistry , aqueous solution , organic chemistry , copolymer , nanoparticle , membrane , polymer , biochemistry , engineering
The formation and structure of water‐soluble complexes of partly neutralized poly(acrylic acid) (PA) and poly(diallyldimethylammonium chloride) (PDADMAC) with oppositely‐charged surfactants [tetradecyltrimethylammonium bromide (C 14 AB) and sodium dodecyl sulfate (SDS)] have been studied by elastic and quasi‐elastic laser light‐scattering, high‐speed sedimentation and viscometry techniques. It was shown that minimum aggregation number ( n min ) of the surfactant ions in the complex micelle depends on the chemical structure of the polyelectrolyte. In particular, C 14 AB interacting with PA in dilute water solutions forms PA bound micelles with n min of 10 2 similar to spherical micelles formed by free C 14 AB. This is in contrast to soluble PDADMAC–SDS complex species, which are most probably vesicles, each containing ca 10 5 surfactant ions instead of 10 2 characteristic for free SDS spherical micelles. A shift from a dilute to a semi‐dilute solution regime with respect to the free PDADMAC results in drastic rearrangement of the PDADMAC–SDS complex structure. Copyright © 2003 Society of Chemical Industry