Maximum bubble pressure method MBPM

The Marangoni elasticity can be determined experimentally from dynamic surface tension measurements that involve known surface area changes. One such technique is the maximum bubble-pressure method (MBPM), which has been used to determine elasticities in this manner (24, 26). In the MBPM, the rates of bubble formation at submerged capillaries are varied. This amounts to changing A/A because approximately equal bubble areas are produced at the maximum bubble pressure condition at all rates. Although such measurements include some contribution from surface dilational viscosity (23, 27), the result will be referred to simply as surface elasticity in this work. 

The first special case refers to adsorption at an immobile interface that has been initially perturbed, and to the maximum bubble pressure method (MBPM). The generalization of Equations 4.78 and 4.81 for this case reads [114] ... 

---