Elastic properties of surfactant monolayers at liquid-liquid interfaces: A molecular dynamics study

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Elastic properties of surfactant monolayers at liquid-liquid interfaces : A molecular dynamics study. / Laradji, Mohamed; Mouritsen, Ole G.

In: Journal of Chemical Physics, Vol. 112, No. 19, 15.05.2000, p. 8621-8630.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Laradji, M & Mouritsen, OG 2000, 'Elastic properties of surfactant monolayers at liquid-liquid interfaces: A molecular dynamics study', Journal of Chemical Physics, vol. 112, no. 19, pp. 8621-8630. https://doi.org/10.1063/1.481486

APA

Laradji, M., & Mouritsen, O. G. (2000). Elastic properties of surfactant monolayers at liquid-liquid interfaces: A molecular dynamics study. Journal of Chemical Physics, 112(19), 8621-8630. https://doi.org/10.1063/1.481486

Vancouver

Laradji M, Mouritsen OG. Elastic properties of surfactant monolayers at liquid-liquid interfaces: A molecular dynamics study. Journal of Chemical Physics. 2000 May 15;112(19):8621-8630. https://doi.org/10.1063/1.481486

Author

Laradji, Mohamed ; Mouritsen, Ole G. / Elastic properties of surfactant monolayers at liquid-liquid interfaces : A molecular dynamics study. In: Journal of Chemical Physics. 2000 ; Vol. 112, No. 19. pp. 8621-8630.

Bibtex

@article{99fa077f0a3d4da5bfec0be1a69dc781,
title = "Elastic properties of surfactant monolayers at liquid-liquid interfaces: A molecular dynamics study",
abstract = "Using a simple molecular model based on the Lennard-Jones potential, we systematically study the elastic properties of liquid-liquid interfaces containing surfactant molecules by means of extensive and large-scale molecular dynamics simulations. The main elastic constants of the interface, corresponding to the interfacial tension and the mean bending modulus are determined from the analyses of the long-wavelength behavior of the structure factor of the capillary waves. We found that the interfacial tension decreases with increasing surfactant interfacial coverage and/or surfactant chain length. However, we found that the corresponding change in the bending rigidity is nonmonotonic. Specifically, we found that the bending rigidity decreases with increasing surfactant interfacial coverage for small surfactant interface coverages, but then it increases as the surfactant interface coverage is further increased. Using a Gaussian theory on an interfacial Ginzburg-Landau model of surfactants, we find that the initial decrease of the bending rigidity is attributed to coupling between fluctuations of the surfactant orientation field to those in the interfacial height.",
author = "Mohamed Laradji and Mouritsen, {Ole G.}",
year = "2000",
month = "5",
day = "15",
doi = "10.1063/1.481486",
language = "English",
volume = "112",
pages = "8621--8630",
journal = "The Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics",
number = "19",

}

RIS

TY - JOUR

T1 - Elastic properties of surfactant monolayers at liquid-liquid interfaces

T2 - A molecular dynamics study

AU - Laradji, Mohamed

AU - Mouritsen, Ole G.

PY - 2000/5/15

Y1 - 2000/5/15

N2 - Using a simple molecular model based on the Lennard-Jones potential, we systematically study the elastic properties of liquid-liquid interfaces containing surfactant molecules by means of extensive and large-scale molecular dynamics simulations. The main elastic constants of the interface, corresponding to the interfacial tension and the mean bending modulus are determined from the analyses of the long-wavelength behavior of the structure factor of the capillary waves. We found that the interfacial tension decreases with increasing surfactant interfacial coverage and/or surfactant chain length. However, we found that the corresponding change in the bending rigidity is nonmonotonic. Specifically, we found that the bending rigidity decreases with increasing surfactant interfacial coverage for small surfactant interface coverages, but then it increases as the surfactant interface coverage is further increased. Using a Gaussian theory on an interfacial Ginzburg-Landau model of surfactants, we find that the initial decrease of the bending rigidity is attributed to coupling between fluctuations of the surfactant orientation field to those in the interfacial height.

AB - Using a simple molecular model based on the Lennard-Jones potential, we systematically study the elastic properties of liquid-liquid interfaces containing surfactant molecules by means of extensive and large-scale molecular dynamics simulations. The main elastic constants of the interface, corresponding to the interfacial tension and the mean bending modulus are determined from the analyses of the long-wavelength behavior of the structure factor of the capillary waves. We found that the interfacial tension decreases with increasing surfactant interfacial coverage and/or surfactant chain length. However, we found that the corresponding change in the bending rigidity is nonmonotonic. Specifically, we found that the bending rigidity decreases with increasing surfactant interfacial coverage for small surfactant interface coverages, but then it increases as the surfactant interface coverage is further increased. Using a Gaussian theory on an interfacial Ginzburg-Landau model of surfactants, we find that the initial decrease of the bending rigidity is attributed to coupling between fluctuations of the surfactant orientation field to those in the interfacial height.

UR - http://www.scopus.com/inward/record.url?scp=0001610210&partnerID=8YFLogxK

U2 - 10.1063/1.481486

DO - 10.1063/1.481486

M3 - Journal article

AN - SCOPUS:0001610210

VL - 112

SP - 8621

EP - 8630

JO - The Journal of Chemical Physics

JF - The Journal of Chemical Physics

SN - 0021-9606

IS - 19

ER -

ID: 236895894