Concentration dependence of aqueous solution viscosities of amphiphilic polymers

The behavior of aqueous solution viscosities on the concentration dependence of amphiphilic polymers, was investigated. Viscometric measurements with aqueous solutions were carried out using an Ostwald-type capillary viscometer. It was observed that in the dilute domain, the viscosity follows the Huggins relation which allows to determine the intrinsic viscosity and the Huggins coefficient. The viscosity of aqueous solutions of associative polymers is significantly dependent on the shear rate. The results show that a unique equation is able to describe the zero-shear viscosity behavior of solutions of highly hydrophilic polymers and amphiphilic ones, using the Huggins constant determined in the dilute domain.