Dynamic surface tension of micellar solutions studied by the maximum bubble pressure method. 1. Experiment

Stability Factors of Foam Film in Contrast to Fluctuation Induced by Humidity Reduction

“…2a) . These results were in good agreement with the previously reported results ( 9,14 ) . For the SDS / 0.4 M NaCl solution, lower g t values were observed compared with that for the SDS solution, indicating that the adsorption rate increased with the addition of electrolyte ( Fig.…”

Dynamic Surface Tension Measurement with a Dynamic Wilhelmy Plate Technique

“…[25] with Eq. [24] should lead, in principle, to the long-time approximation, the inversion of the Laplace transformation is very mathematically involved and cannot be solved analytically.…”

“…The drop volume (17)(18)(19), maximum bubble pressure (21)(22)(23), oscillating jet (24), and dynamic capillary (25) have been developed and extensively used in dynamic surface tension studies. These techniques involve the surface expanding and/or the solution flow creating the new aqueous/air interface.…”

Importance of Micellar Kinetics in Relation to Technological Processes

“…In most cases the equilibrium surface tension is never reached and the actual surface tension experienced at the interface is much higher. The dynamic surface tension can be measured by the maximum bubble pressure method (104,105) and depends on several factors: monomer concentration (CMC), micellar stability, diffusion rate of the surfactant molecule to the interface, and surfactant concentration. The measurement of dynamic properties is relevant to technological processes where new interfaces are being formed, such as foaming or film formation, as well as to situations where surfactants diffuse to a new liquid/liquid interface, such as emulsification, or to a solid/liquid interface, such as fabric wetting.…”