2003
DOI: 10.1016/s0927-7757(03)00135-3
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Surface dilatational properties of mixed sodium dodecyl sulfate/dodecanol solutions

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Cited by 58 publications
(81 citation statements)
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“…The average value of the power-law index m was found to be 0.64 ± 0.04 with 95% confidence interval. Note also that the surface dilatational modulus of aqueous SDS [16] and CTAB [29,30,31] in air is small and less than 60 mN/m suggesting that the bubble surfaces are tangentially mobile. Thus, experimental results for microfoams with spherical bubbles and porosity ranging from 0.54 to 0.72 are consistent with the theoretical models assuming large porosity, non-spherical bubbles, and non-zero slip velocity [16,19] as well as experimental data for a train of large polyhedral bubbles [17].…”
Section: Dimensional Analysismentioning
confidence: 99%
“…The average value of the power-law index m was found to be 0.64 ± 0.04 with 95% confidence interval. Note also that the surface dilatational modulus of aqueous SDS [16] and CTAB [29,30,31] in air is small and less than 60 mN/m suggesting that the bubble surfaces are tangentially mobile. Thus, experimental results for microfoams with spherical bubbles and porosity ranging from 0.54 to 0.72 are consistent with the theoretical models assuming large porosity, non-spherical bubbles, and non-zero slip velocity [16,19] as well as experimental data for a train of large polyhedral bubbles [17].…”
Section: Dimensional Analysismentioning
confidence: 99%
“…Therefore, as the interfacial dilatation becomes faster, the surfactant molecules at the interface cannot exchange quickly to the bulk, and fluctuation of γ from the equilibrium value, and consequently, the magnitude of E * increases, as long as the difference between the time scale of these processes is not too large. For very fast dilatation, however, the surfactant molecules have no time to exchange and the elasticity becomes independent of the oscillation frequency [20,21]. When an air-liquid interface undergoes sinusoidal deformation, a phase shift, φ, occurs between the area and surface tension curves.…”
Section: Interfacial Dilatational Rheologymentioning
confidence: 99%
“…Because the relaxation dynamics of molecules adsorbed at fluid/fluid interfaces (diffusion exchange, surface rearrangement, etc.) occur over broad time scales, it is desirable to extend the experimentally accessible time scale into the high frequency range to explore faster relaxation modes [17][18][19][20]. Unfortunately, viscous forces generated from the motion of the oscillating drop invalidate the static Young-Laplace equation.…”
Section: Introductionmentioning
confidence: 99%