Polymer adsorption at liquid/air interfaces under lateral pressure

Vered Aharonson*, David Andelman, Anton Zilman, Philip A. Pincus, Elie Raphaël

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We present calculations of surface tension of absorbed polymer solutions at the liquid/air interface. Lateral changes in the area per monomer on the surface are induced by changing the surface pressure (lateral compression), while keeping the total surface excess fixed. Lateral compression of the adsorbed layer immersed in a good solvent results in an increase in the surface monomer concentration and surface pressure up to a critical area per monomer value where the compressibility of the system vanishes. Our mean-field model is not appropriate to describe more compressed states. Calculations are repeated in theta and bad solvent conditions, and yield similar behavior of the isotherms.

Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalPhysica A: Statistical Mechanics and its Applications
Volume204
Issue number1-4
DOIs
StatePublished - 1 Mar 1994

Funding

FundersFunder number
German-Israel Binational FoundationI-0197
U.S. Department of EnergyDE-FG03-87ER45288
Israel Academy of Sciences and Humanities

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