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Related Experiment Video

Updated: Jun 20, 2026

Enhanced Oil Recovery using a Combination of Biosurfactants

Enhanced Oil Recovery using a Combination of Biosurfactants

Published on: June 3, 2022

Surfactant-enhanced rapid spreading of drops on solid surfaces.

D R Beacham¹, O K Matar, R V Craster

¹Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.

Langmuir : the ACS Journal of Surfaces and Colloids

|September 8, 2009

Summary

Surfactant solutions enhance droplet spreading on hydrophobic surfaces by optimizing adsorption and mass. Maximum spreading occurs with intermediate basal adsorption and surfactant mass.

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Area of Science:

Surface Science
Fluid Dynamics
Colloid and Interface Science

Background:

Trisiloxane solutions exhibit unique wetting properties on highly hydrophobic substrates.
Understanding surfactant-enhanced spreading is crucial for various industrial applications.

Purpose of the Study:

To investigate the mechanisms of surfactant-enhanced droplet spreading on solid substrates.
To model the influence of surfactant transport and interfacial phenomena on droplet dynamics.

Main Methods:

Coupling a lubrication model with advection-diffusion equations for surfactant transport.
Incorporating micelle dynamics, adsorption, and equations of state for surface tension and wettability.
Numerical simulations to analyze droplet deformation and spreading rates.

Main Results:

Basal adsorption, kinetic rates, and surfactant availability significantly affect droplet deformation and spreading.
Spreading rate is maximized at intermediate basal adsorption rates.
Optimal spreading also depends on the total mass of surfactant available.

Conclusions:

The study provides insights into the complex interplay of factors governing surfactant-enhanced spreading.
Numerical results highlight the importance of optimizing surfactant properties and delivery for efficient wetting.
This research contributes to the fundamental understanding of fluid behavior on engineered surfaces.