Dynamic surface tension of micellar solutions in the millisecond and submillisecond time range.
The analysis of the available bubble life times and dead times for the bubble pressure tensiometer BPA-1S shows that dynamic surface tensions can be measured also for surfactant solutions at concentrations many times higher than the corresponding CMC. For the three nonionic surfactants Triton X-100, Triton X-45, and C14EO8 experiments are performed for solutions with a concentration of up to 200 times the CMC (C14EO8). Comparison of the experimental data with micelle kinetics models yields rate constants for the fast micelle dissolution process, which are in a good agreement with values obtained by other experimental methodologies.
Fainerman
V B
VB
Medical Physicochemical Centre, Donetsk Medical University, 16 Ilych Avenue, 83003 Donetsk, Ukraine.
Mys
V D
VD
Makievski
A V
AV
Petkov
J T
JT
Miller
R
R
D000327:Adsorption; D005026:Ethylene Glycols / Q000737:chemistry*; D007700:Kinetics; D008823:Micelles; D017830:Octoxynol / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry; D013500:Surface Tension; D013501:Surface-Active Agents / Q000737:chemistry*; D013997:Time Factors
D005026:Ethylene Glycols; D008823:Micelles; D012996:Solutions; D013501:Surface-Active Agents; C519924:octaethylene glycol monotetradecyl ether; D017830:Octoxynol