Aqueous solution properties of hydrophobically associating copolymers
2007; Linguagem: Inglês
10.1007/bfb0115168
AutoresD. Renoux, F. Canadau, Joseph Selb,
Tópico(s)Environmental Chemistry and Analysis
ResumoWater-soluble polymers containing small amounts of hydrophobic groups have been synthesized in an aqueous medium by free radical copolymerization of a hydrophilic monomer (acrylamide) with a micelle-forming cationic polymerizable surfactant. Such hydrophobically modified water-soluble polymers exhibit particulr aqueous solution properties due to attractive hydrophobic interactions and repulsive electrostatic interactions. The competition between these two effects, as well as the balance between intra- and intermolecular interactions, give rise to various rheological behaviors depending on polymer concentration, ionic strength and shear time. The kinetics and the reversibility of the association/dissociation phenomena have been monitored by studying time-effect on the rheological solution properties.
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