Apparent dynamic surface tension of polymer solutions

Abstract

Dynamic surface tensions of aqueous solutions of polymers were measured using a measuring device based on the maximum bubble pressure method. The measurements implied that extra increase in the measured surface tension was induced by the elasticity of the polymer solutions at high frequencies of bubble life cycle. Furthermore, at high polymer concentrations, the surface tension exceeded that of the solvent. These results mean that the measurements for polymer solutions having strong elasticity with the maximum bubble pressure method correspond to apparent dynamic surface tension including the effect of elasticity.