Role of ion ligands in the attachment of poly(ethylene oxide) to a charged surface

Liraz Chai, Jacob Klein*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

Using a surface force balance we demonstrate unambiguously that high-molecular-weight poly(ethylene oxide) (PEO) does not adsorb onto mica from purified water with no added salt, a surprising observation in view of its strong adsorption on mica from aqueous 0.1 M KNO3 solution. Analysis of the force profiles, together with the known complexation of PEO with metal ions, suggests that the polymer attachment to the negatively charged surface is mediated by the hydrated potassium ion acting as a ligand.

Original languageAmerican English
Pages (from-to)1104-1105
Number of pages2
JournalJournal of the American Chemical Society
Volume127
Issue number4
DOIs
StatePublished - 2 Feb 2005
Externally publishedYes

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