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Issue 16, 2005
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Penetration of surfactant solutions into hydrophobic capillaries

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Abstract

The initial rise velocity of surfactant solutions in hydrophobic capillaries is independent of time (F. Tiberg, B. Zhmud, K. Hallstensson and M. von Bahr, Phys. Chem. Chem. Phys., 2000, 2, 5189). By analogy with the hydrodynamics of an overflowing cylinder, we present a steady-state solution for capillary penetration in which the velocity is determined by the adsorption kinetics at the air–water interface. Good agreement between the model predictions and experimental data of Tiberg and coworkers is obtained for the non-ionic surfactant C10E6 under the assumption of diffusion-controlled adsorption. The longer chain homologue, C14E6, shows evidence of kinetic barriers to adsorption.

Graphical abstract: Penetration of surfactant solutions into hydrophobic capillaries

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Publication details

The article was received on 17 Jun 2005, accepted on 11 Jul 2005 and first published on 21 Jul 2005


Article type: Paper
DOI: 10.1039/B508632A
Citation: Phys. Chem. Chem. Phys., 2005,7, 3048-3051
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    Penetration of surfactant solutions into hydrophobic capillaries

    C. D. Bain, Phys. Chem. Chem. Phys., 2005, 7, 3048
    DOI: 10.1039/B508632A

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