Adsorption dynamics of surfactants at the air/water interface: a critical review of mathematical models, data, and mechanisms

Chien Hsiang Chang; Elias I. Franses

doi:10.1016/0927-7757(94)03061-4

Adsorption dynamics of surfactants at the air/water interface: a critical review of mathematical models, data, and mechanisms

Chien Hsiang Chang, Elias I. Franses

Department of Chemical Engineering

Research output: Contribution to journal › Review article › peer-review

611 Citations (Scopus)

Abstract

This review covers equilibrium and dynamic aspects of surface tension and adsorption, primarily of single nonmicellar or premicellar surfactants at the air/water interface. Equilibrium tension data have been related to the Langmuir adsorption equilibrium isotherm and the Gibbs isotherm. A set of Langmuir isotherm parameters has been compiled. Dynamic adsorption models with the diffusion-controlled and mixed-kinetic mechanisms are discussed in some detail and applied to several sets of data. Apparent diffusion coefficients, inferred from dynamic tension data, and kinetic adsorption parameters, derived from application of the models to the data, are presented and critically evaluated. The adsorption of most of the surfactants examined is slower than predicted by diffusion-controlled models. Exceptions are mostly non-ionic surfactants and certain alcohols.

Original language	English
Pages (from-to)	1-45
Number of pages	45
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	100
Issue number	C
DOIs	https://doi.org/10.1016/0927-7757(94)03061-4
Publication status	Published - 1995 Jul 25

All Science Journal Classification (ASJC) codes

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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10.1016/0927-7757(94)03061-4

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AB - This review covers equilibrium and dynamic aspects of surface tension and adsorption, primarily of single nonmicellar or premicellar surfactants at the air/water interface. Equilibrium tension data have been related to the Langmuir adsorption equilibrium isotherm and the Gibbs isotherm. A set of Langmuir isotherm parameters has been compiled. Dynamic adsorption models with the diffusion-controlled and mixed-kinetic mechanisms are discussed in some detail and applied to several sets of data. Apparent diffusion coefficients, inferred from dynamic tension data, and kinetic adsorption parameters, derived from application of the models to the data, are presented and critically evaluated. The adsorption of most of the surfactants examined is slower than predicted by diffusion-controlled models. Exceptions are mostly non-ionic surfactants and certain alcohols.

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Adsorption dynamics of surfactants at the air/water interface: a critical review of mathematical models, data, and mechanisms

Abstract

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