Boundary lubricants with exceptionally low friction coefficients based on 2D close-packed phosphatidylcholine liposomes

Ronit Goldberg, Avi Schroeder, Gilad Silbert, Keren Turjeman, Yechezkel Barenholz, Jacob Klein*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

143 Scopus citations

Abstract

Liposomes of hydrogenated soy phosphatidylcholine (PC) lipids spontaneously self-assemble in close-packed layers on solid surfaces to form boundary lubricants that reduce the coefficient μ of sliding friction between them down to μ ≈ 10 -4 - 2 × 10 -5, at pressures up to ca. 12 MPa. This strikingly low value is attributed to hydration-lubrication by the PC headgroups exposed at the surfaces of the gel-phase vesicles.

Original languageAmerican English
Pages (from-to)3517-3521
Number of pages5
JournalAdvanced Materials
Volume23
Issue number31
DOIs
StatePublished - 16 Aug 2011

Keywords

  • hydration
  • lipids
  • liposomes
  • lubrication
  • surface forces

Fingerprint

Dive into the research topics of 'Boundary lubricants with exceptionally low friction coefficients based on 2D close-packed phosphatidylcholine liposomes'. Together they form a unique fingerprint.

Cite this