Studying surfactant mass transport through dynamic interfacial tension measurements : A review of the models, experiments, and the contribution of microfluidics

Studying surfactant mass transport through dynamic interfacial tension measurements : A review of the models, experiments, and the contribution of microfluidics
C Brigodiot, M Marsiglia, C Dalmazzone, K Schroën, A Colin

https://www.sciencedirect.com/science/article/pii/S0001868624001623

Résumé :

Surfactant mass transport towards an interface plays a critical role during formation of emulsions, foams and in industrial processes where two immiscible phases coexist. The understanding of these mechanisms as experimentally observed by dynamic interfacial tension measurements, is crucial. In this review, theoretical models describing both equilibrated systems and surfactant kinetics are covered. Experimental results from the literature are analysed based on the nature of surfactants and the tensiometry methods used. The innovative microfluidic techniques that have become available to study both diffusion and adsorption mechanisms during surfactant mass transport are discussed and compared with classical methods. This review focuses on surfactant transport during formation of droplets or bubbles ; stabilisation of dispersed systems is not discussed here.


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