Effect of micellar life‐time on the bubble dynamics in sodium dodecyl sulfate solutions

Effect of Long Chain Alcohols on Micellar Relaxation Time and Foaming Properties of Sodium Dodecyl Sulfate Solutions

“…However, at ϭ 1, ␥ D ϭ ␥ w , indicating that no surfactant is present at the interface of bubbles. Values between 0 and 1 are a measure for the surfactant concentration at the surface, and hence, the stability of micelles, assuming the diffusion time of monomers to be negligible (20). The more stable the micelles, the less monomer flux and hence values closer to 1 will be obtained.…”

Importance of Micellar Kinetics in Relation to Technological Processes

“…If the micelles in solution are very stable, they cannot provide monomers to the interface quickly enough and thus the interfacial tension remains higher. Therefore, lower foamability, larger single bubble foam volumes, and a minimum frequency of bubble generation were found (93,94). Very unstable micelles, however, provide monomers to the surface fast enough, resulting in lower interfacial tension.…”

“…However, when γ D = γ w , θ =1, indicating that no surfactant is present at the interface of the bubble (i.e., at high bubble frequency and very stable micelles). Values between 0 and 1 are a measure of the surfactant concentration at the surface and, hence, the stability of micelles, assuming the diffusion time of monomers to be negligible (94,107). The more stable the micelles, the less monomer flux and hence θ values closer to 1 are obtained.…”

Kinetics of micellization: its significance to technological processes

“…If the micelles in solution are very stable, they cannot provide monomer fast enough to the interface and thus the interfacial tension remains higher. Therefore, lower foamability, larger single bubble foam volumes and a minimum frequency of bubble generation were found [25,26]. Very unstable micelles, however, provide monomers fast enough to the surface resulting in lower interfacial tensions.…”