Surfactant solutions confined in homogeneous and Janus-like slits

T. Staszewski; M. Borówko

doi:10.5488/CMP.29.13401

Authors

T. Staszewski Department of Theoretical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Poland https://orcid.org/0000-0002-0284-4253
M. Borówko Department of Theoretical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Poland https://orcid.org/0000-0003-1461-249X

DOI:

https://doi.org/10.5488/CMP.29.13401

Keywords:

inhomogeneous fluids, fluids, surfactants, molecular dynamics

Abstract

We study the behavior of aqueous surfactant solutions in the bulk phase and in slit-like pores by molecular dynamics. Adsorption and self-assembly of nonionic surfactants C₇E₃ that mimic alkyl poly(ethylene oxide) molecules are investigated. We consider pores with the same walls and Janus-like slits. The individual walls are inert, hydrophilic, or hydrophobic. We focus on the morphology of the surfactant solution confined in different slits. The influence of a pore type and its width is discussed. The aggregative adsorption of surfactants was found. Our simulations show that in slits surfactants assemble into structures that do not occur in the bulk phases.

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