Fluorocarbon polymerizable surfactants: viscometric behavior, micellar polymerization and interactions with associating polymers |
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Authors: | K Stähler J Selb F Candau |
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Institution: | (1) Institut Charles Sadron (CRM) 6 rue Boussingault F-67083 Strasbourg Cedex France e-mail: candau@ics.u-strasbg.fr, FR |
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Abstract: | The micellar aggregation of two fluorocarbon surfactants bearing a polymerizable acrylamido group and differing only in the
degree of amido substitution (CONH or CONC2H5) has been investigated by viscometry. The two surfactants exhibit distinct solution properties with a micellar growth occurring
at a much lower concentration for the N-monosubstituted sample which shows in addition a shear thickening and rheopectic behavior. The ability of the latter surfactant
to form hydrogen bonding is responsible for this difference in behavior. Micellar copolymerization of acrylamide with these
surfactants or with a hydrocarbon analogue gives copolymers with a polysoap-like behavior. The copolymers in aqueous solution
show a pronounced intramolecular hydrophobic aggregation expressed by relatively low-viscosity values when compared with those
of other hydrophobically modified water-soluble polymers reported in the literature. Surfactant–polymer mixed systems do not
show a strong incompatibility between fluorocarbon and hydrocarbon moieties.
Received: 24 March 1998 Accepted: 30 June 1998 |
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Keywords: | Fluorocarbon polymerizable surfactants worm-like micelles viscometric behavior of flurocarbon surfactants micellar polymerization acrylamide copolymers polymer surfactant interactions |
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