Hydrodynamic signatures of stationary Marangoni-driven surfactant transport

Abstract

We experimentally study steady Marangoni-driven surfactant transport on the interface of a deep water layer. Using hydrodynamic measurements, and without using any knowledge of the surfactant physico-chemical properties, we show that sodium dodecyl sulphate and Tergitol 15-S-9 introduced in low concentrations result in a flow driven by adsorbed surfactant. At higher surfactant concentration, the flow is dominated by the dissolved surfactant. Using Camphoric acid, whose properties are {\it a priori} unknown, we demonstrate this method's efficacy by showing its spreading is adsorption dominated.

References in corpus (6)

• The Marangoni flow of soluble amphiphiles
• Fluorescent visualization of a spreading surfactant
• A Landau-Squire Nanojet
• Swarming of Self-Propelled Camphor Boats
• Shock driven jamming and periodic fracture of particulate rafts
• Axisymmetric spreading of surfactant from a point source

Cited by in corpus (8)

• Effective diffusion coefficient including the Marangoni effect
• Spreading dynamics of reactive surfactants driven by Marangoni convection
• Axisymmetric spreading of surfactant from a point source
• Fingering instability in Marangoni spreading on a deep layer of polymer solution
• Hydrodynamic response of a surfactant-laden interface to a radial flow
• "Solutocapillary Marangoni flow induced in waterbody by solute source"
• On the shear-driven surfactant layer instability
• Exact solutions for viscous Marangoni spreading