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Dynamic surface tension and adsorption kinetics of a siloxane dicephalic surfactant

  • Physical Chemistry of Surface Phenomena
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Abstract

The dynamic surface tension (DST) of a siloxane dicephalic surfactant was measured by using the maximum bubble pressure method. By using the classical Ward and Tordai equation, the diffusion coefficient for each bulk surfactant concentration was calculated. The results show that at the initial adsorption stage and at the end of the adsorption process, the dynamic surface tension data were all consistent with this diffusion-controlled mechanism. Their diffusion coefficient was slightly lower than that for conventional hydrocarbon surfactants.

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Correspondence to Dianlong Zhang.

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Zhang, D., Qu, W. & Li, Z. Dynamic surface tension and adsorption kinetics of a siloxane dicephalic surfactant. Russ. J. Phys. Chem. 89, 297–301 (2015). https://doi.org/10.1134/S0036024415020089

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  • DOI: https://doi.org/10.1134/S0036024415020089

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