Healing of adsorbed polymer layers in a narrow gap following removal by shear

Uri Raviv*, Jacob Klein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The shear and normal forces between layers of poly(ethylene oxide) (PEO), of molecular weights Mw = 37 kg/mol adsorbed onto smooth, curved solid (mica) surfaces across the good solvent toluene have been determined using a surface force balance (SFB). The equilibrium Fn(D) profiles are closely similar to those measured in earlier studies between adsorbed PEO layers. The shearing motion causes the removal of polymer from within the intersurface gap during sliding. The recovery of the adsorbing layer has been measured and the amount of adsorption with time was calculated. Our findings showed that there is no migration of polymers on the surfaces and that the recovery of the layer is controlled by the rate of diffusion of polymer chains into the gap.

Original languageAmerican English
Pages (from-to)1032-1038
Number of pages7
JournalPolymers for Advanced Technologies
Volume13
Issue number10-12
DOIs
StatePublished - 2002
Externally publishedYes

Keywords

  • Adsorbed polymers
  • Narrow gap
  • Poly(ethylene oxide)
  • Polymer diffusion
  • Surface forces

Fingerprint

Dive into the research topics of 'Healing of adsorbed polymer layers in a narrow gap following removal by shear'. Together they form a unique fingerprint.

Cite this