Add time:08/17/2019         Source:sciencedirect.com

In this study the rheological behaviour, air—liquid surface and liquid—liquid interfacial activities of solutions of water-soluble associative copolymers of sodium maleate/1-dodecene and sodium maleate/1-hexadecene are investigated with respect to the polymer concentration, temperature, salinity, shear rate and time. The copolymers have been found to exhibit good air—liquid surface and liquid—liquid interfacial activities. The viscosity of the copolymer solutions is characteristically low and invariant with shear rate. Adding salt to the solution results in an increase in the liquid—liquid interfacial activity and viscosity of the polymer solution. The magnitude of the viscosity and the behaviour of the air—liquid surface tension versus concentration indicate that the copolymers form small micelles, each containing a few polymer molecules. The factors that lead to an increase in viscosity also lead to an increase in air—liquid surface and liquid—liquid interfacial activities of these polymer solutions.

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