Bending moduli and spontaneous curvature of the monolayer in a surfactant bilayer

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Abstract

We developed a method to evaluate the mechanical properties of the monolayers in symmetric surfactant bilayers using self-consistent field theory. A specific boundary condition is used to impose the same curvature onto the two opposing monolayers at the surfactant chemical potential equal to that of the corresponding homogeneously curved bilayer. Typically, the spontaneous monolayer curvature J0m ¿ 0 and its value depend on the surfactant architecture. This is of importance for the thermodynamics and topology of lamellar surfactant phases. Furthermore, it may be relevant in processes involving biological membranes, for example, the fusion and budding of vesicles and the incorporation of proteins in lipid bilayers.
Original languageEnglish
Pages (from-to)14251-14256
JournalThe Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical
Volume109
Issue number30
DOIs
Publication statusPublished - 2005

Keywords

  • lipid-bilayers
  • membranes
  • thermodynamics
  • elasticity
  • micelles
  • systems
  • length

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