Journal
ADVANCES IN COLLOID AND INTERFACE SCIENCE
Volume 85, Issue 2-3, Pages 103-144Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0001-8686(99)00017-2
Keywords
dynamic surface tension; adsorption mechanisms; surfactant adsorption
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Recent advances in understanding dynamic surface tensions (DSTs) of surfactant solutions are discussed. For pre-CMC solutions of non-ionic surfactants, theoretical models and experimental evidence for a mixed diffusion-kinetic adsorption mechanism are covered. For micellar solutions of non-ionics, up to approximately 100 x CMC, the DST behaviour can also be accounted for using a mixed mechanism model. Finally, the first reported measurements of the dynamic surface excess Gamma(t), using the overflowing cylinder in conjunction with neutron reflection, are described. (C) 2000 Elsevier Science B.V. All rights reserved.
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