Surface dynamic elasticity of poly(ethylene oxide) monolayers on a water surface

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24 Citations (Scopus)

Abstract

The methods of transverse and longitudinal surface waves and of oscillating barrier were used to measure a surface dynamic elasticity of poly(ethylene oxide) films spread on aqueous substrate within the frequency range of 0.001-520 Hz. Unlike the adsorption films, the main relaxation processes in the spread poly(ethylene oxide) films are observed at higher frequencies. A comparison of static and dynamic values of the surface elasticity shows that the surface film at surface polymer concentrations higher than 0.4 mg/m2 cannot be considered already as purely two-dimensional film. It was found that the surface tension (surface pressure) can be insufficiently sensitive to conformational transformations in the surface polymer films.

Original languageEnglish
Pages (from-to)129-134
Number of pages6
JournalColloid Journal
Volume64
Issue number2
DOIs
Publication statusPublished - 1 Mar 2002

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Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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