Dynamic Surface Tension and Foaming Properties of Aqueous Polyoxyethylene n-Dodecyl Ether Solutions

The contribution of dynamic surface tension (γ t), obtained using the maximum bubble pressure method, on foamability and foam stability is presented for aqueous solutions of a series of polyoxyethylene dodecyl ethers; C 12H 25O(C 2H 4O) n H, where n = 5-53. In the shorter measuring time region (1 s)...

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Bibliographic Details
Published in:Journal of colloid and interface science 1995-08, Vol.173 (2), p.493-499
Main Authors: Tamura, Takamitsu, Kaneko, Yukihiro, Ohyama, Michiyo
Format: Article
Language:English
Subjects:
bubble
Chemistry
Colloidal state and disperse state
dynamic surface tension
Emulsions. Microemulsions. Foams
Exact sciences and technology
foam
General and physical chemistry
lamella
laminometer
Marangoni effect
maximum bubble pressure method
polyoxyethylene dodecylether
surface viscosity
thin liquid film
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Summary:The contribution of dynamic surface tension (γ t), obtained using the maximum bubble pressure method, on foamability and foam stability is presented for aqueous solutions of a series of polyoxyethylene dodecyl ethers; C 12H 25O(C 2H 4O) n H, where n = 5-53. In the shorter measuring time region (1 s), at which the dynamic surface tension approaches the meso-equilibrium (γ m) t γ m decreased with a decrease in EO units. The degree of elongation of lamellae ( L lamellae), measured by a laminometer, decreased with an increase in EO units. The residual foam stability, measured by the Ross-Miles techniques, was also correlated with the decrease in the values of L lamellae. According to these techniques, the significance of the surface tension gradient for foamability is elucidated.
ISSN:0021-9797
1095-7103
DOI:10.1006/jcis.1995.1351