Issue 11, 1989
From the journal:

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases

General isotherm equation for adsorption of surfactants at solid/liquid interfaces. Part 1. Theoretical

Bu-Yao Zhu  and  Tiren Gu  

Abstract

Based on the two-step adsorption mechanism (first step : the surface-active species are adsorbed through the interactions between the surface-active species and the solid surface; second step: through the hydrophobic interaction between the adsorbed surface-active species) and the mass-action treatment, the following general adsorption isotherm equation is derived: Γ=Γ∞k1C([graphic omitted] +k2Cn–1)//1 +k1C(1 +k2Cn–1) where Γ is the amount of surfactant adsorbed at concentration C, Γ∞ is the limiting adsorption at high concentrations, k1 and k2 are the equilibrium constants involved in the first and second step, respectively, and n is the aggregation number of surface hydrophobic aggregates or hemimicelles. The equation can interpret various types of surfactant adsorption isotherms (including L-, and LS-types) published in the literature.

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Article information

DOI
https://doi.org/10.1039/F19898503813
Article type
Paper

J. Chem. Soc., Faraday Trans. 1, 1989,85, 3813-3817

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General isotherm equation for adsorption of surfactants at solid/liquid interfaces. Part 1. Theoretical

B. Zhu and T. Gu, J. Chem. Soc., Faraday Trans. 1, 1989, 85, 3813 DOI: 10.1039/F19898503813

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