An Instrument for Measuring the Static and Dynamic Response to Shear at the Air/Water Interface and of Insoluble Monolayers: Some New Insights into Two-Dimensional Phases

B. M. Abraham, K. Miyano, J. B. Ketterson

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

An apparatus has been designed, assembled, and employed in experiments to determine, as a function of molecular areal density, the viscoelastic behavior of insoluble monolayers spread on water. The apparatus has several unique features: (1) surface tension can be monitored constantly without touching the monolayer; (2) compression of the film is isotropic in an annular space entirely free of obstructions; (3) the stress transducer, located at the geometric center, defines the inner wall of the annulus and the trough wall defines the outer wall of the annulus. A wide range of viscosity and shear modulus can be measured by controlling the stress or strain applied to the film. The apparatus can be used to study the air/water interface of surfactant solutions as well as the surface of water covered by an insoluble monolayer.

Original languageEnglish (US)
Pages (from-to)245-249
Number of pages5
JournalIndustrial and Engineering Chemistry Product Research and Development
Volume23
Issue number2
DOIs
StatePublished - Jun 1 1984

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Engineering(all)
  • Industrial and Manufacturing Engineering

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