Title
Adsorption-kinetics with surface dilatation : 4. peaktensiometry-adsorption to a linearly expanded surface
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Amsterdam ,
Subject
Chemistry
Source (journal)
Colloids and surfaces: A: physicochemical and engineering aspects. - Amsterdam
Volume/pages
85(1994) :2-3 , p. 119-125
ISSN
0927-7757
ISI
A1994NZ34400003
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Peaktensiometry refers to an experimental method in which the surface of a surfactant solution is expanded with a constant velocity. Since the dilatation rate for these types of experiments is not a constant, we attain no steady-state surface tension. Instead the curve DELTAsigma vs. t (where a is surface tension and t is time), shows a maximum (peak). The experiments in which the surface is expanded with a constant dilatation rate are also markedly affected by the speed of the surface expansion, as is observed in the peak height and in the position of the peak in the course of time. A theory is presented in order to explain this adsorption behaviour of surfactant solutions at the air/water interface. In fact, the theory can be generalized such that it applies for any type of surface dilatation rate.
E-info
https://repository.uantwerpen.be/docman/iruaauth/5a85e7/8984376.pdf
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