Lattice model for the wetting transition of alkanes on aqueous surfactant solutions

H. Matsubara; M. Aratono; K. M. Wilkinson; C. D. Bain

doi:10.1021/la052632a

Lattice model for the wetting transition of alkanes on aqueous surfactant solutions

H. Matsubara, M. Aratono, K. M. Wilkinson, C. D. Bain

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

Droplets of alkanes on aqueous solutions of the cationic surfactants C _nTAB (CH₃(CH₂)_n-1N ⁺(CH₃)₃Br^-) exhibit a first-order wetting transition as the concentration of the surfactant is increased. A theoretical model is presented in which the surface free energy is broken down into a long-range dispersion interaction and a short-range interaction described by a 2D lattice gas, taking into account the interaction between oil and surfactant molecules. The model provides quantitative agreement with the observed wetting transitions and the variation in composition of the wetting film with bulk surfactant concentration. The behavior of oil drops on large reservoirs of dilute surfactant is discussed.

Original language	English
Pages (from-to)	982-988
Number of pages	7
Journal	Langmuir
Volume	22
Issue number	3
DOIs	https://doi.org/10.1021/la052632a
Publication status	Published - Jan 31 2006

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la052632a

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abstract = "Droplets of alkanes on aqueous solutions of the cationic surfactants C nTAB (CH3(CH2)n-1N +(CH3)3Br-) exhibit a first-order wetting transition as the concentration of the surfactant is increased. A theoretical model is presented in which the surface free energy is broken down into a long-range dispersion interaction and a short-range interaction described by a 2D lattice gas, taking into account the interaction between oil and surfactant molecules. The model provides quantitative agreement with the observed wetting transitions and the variation in composition of the wetting film with bulk surfactant concentration. The behavior of oil drops on large reservoirs of dilute surfactant is discussed.",

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AU - Matsubara, H.

AU - Aratono, M.

AU - Wilkinson, K. M.

AU - Bain, C. D.

PY - 2006/1/31

Y1 - 2006/1/31

N2 - Droplets of alkanes on aqueous solutions of the cationic surfactants C nTAB (CH3(CH2)n-1N +(CH3)3Br-) exhibit a first-order wetting transition as the concentration of the surfactant is increased. A theoretical model is presented in which the surface free energy is broken down into a long-range dispersion interaction and a short-range interaction described by a 2D lattice gas, taking into account the interaction between oil and surfactant molecules. The model provides quantitative agreement with the observed wetting transitions and the variation in composition of the wetting film with bulk surfactant concentration. The behavior of oil drops on large reservoirs of dilute surfactant is discussed.

AB - Droplets of alkanes on aqueous solutions of the cationic surfactants C nTAB (CH3(CH2)n-1N +(CH3)3Br-) exhibit a first-order wetting transition as the concentration of the surfactant is increased. A theoretical model is presented in which the surface free energy is broken down into a long-range dispersion interaction and a short-range interaction described by a 2D lattice gas, taking into account the interaction between oil and surfactant molecules. The model provides quantitative agreement with the observed wetting transitions and the variation in composition of the wetting film with bulk surfactant concentration. The behavior of oil drops on large reservoirs of dilute surfactant is discussed.

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Lattice model for the wetting transition of alkanes on aqueous surfactant solutions

Abstract

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