Dynamic surface properties of poly(vinylpyrrolidone) solutions

Research output

50 Citations (Scopus)

Abstract

The dynamic surface tension and the complex dynamic surface elasticity of poly(vinylpyrrolidone) (PVP) solutions were measured in the concentration range 10-5 wt% up to about 1 wt%. The surface tension changed slowly with time at low (<10-4 wt%) and high concentrations (>0.1 wt%). At low concentrations this is a consequence of the slow transport by diffusion of PVP molecules from the depth of the bulk phase to the surface. At high concentrations the time effect is unexpected and probably the result of PVP contamination of high surface activity. The dynamic surface elasticity of PVP solutions gradually decreases with increasing concentration up to the range of high concentrations (>0.1 wt%) where an abrupt increase in the elasticity caused by the adsorbed impurity is observed. At low and medium concentrations the viscoelastic behavior of PVP adsorbed films is similar to that of the previously investigated poly(ethylene oxide) and poly(ethylene glycol) films and is determined by the number of loops and tails protruding into the bulk phase.

Original languageEnglish
Pages (from-to)417-424
Number of pages8
JournalJournal of Colloid and Interface Science
Volume255
Issue number2
DOIs
Publication statusPublished - 1 Jan 2002

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Surface properties
Elasticity
Surface tension
Polyethylene oxides
Polyethylene glycols
Contamination
Impurities
Molecules

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

Cite this

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title = "Dynamic surface properties of poly(vinylpyrrolidone) solutions",
abstract = "The dynamic surface tension and the complex dynamic surface elasticity of poly(vinylpyrrolidone) (PVP) solutions were measured in the concentration range 10-5 wt{\%} up to about 1 wt{\%}. The surface tension changed slowly with time at low (<10-4 wt{\%}) and high concentrations (>0.1 wt{\%}). At low concentrations this is a consequence of the slow transport by diffusion of PVP molecules from the depth of the bulk phase to the surface. At high concentrations the time effect is unexpected and probably the result of PVP contamination of high surface activity. The dynamic surface elasticity of PVP solutions gradually decreases with increasing concentration up to the range of high concentrations (>0.1 wt{\%}) where an abrupt increase in the elasticity caused by the adsorbed impurity is observed. At low and medium concentrations the viscoelastic behavior of PVP adsorbed films is similar to that of the previously investigated poly(ethylene oxide) and poly(ethylene glycol) films and is determined by the number of loops and tails protruding into the bulk phase.",
keywords = "Adsorption kinetics, Competitive adsorption of impurities, Polymer adsorption layers, Surface viscoelasticity",
author = "Noskov, {B. A.} and Akentiev, {A. V.} and R. Miller",
year = "2002",
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doi = "10.1006/jcis.2002.8614",
language = "English",
volume = "255",
pages = "417--424",
journal = "Journal of Colloid and Interface Science",
issn = "0021-9797",
publisher = "Elsevier",
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TY - JOUR

T1 - Dynamic surface properties of poly(vinylpyrrolidone) solutions

AU - Noskov, B. A.

AU - Akentiev, A. V.

AU - Miller, R.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - The dynamic surface tension and the complex dynamic surface elasticity of poly(vinylpyrrolidone) (PVP) solutions were measured in the concentration range 10-5 wt% up to about 1 wt%. The surface tension changed slowly with time at low (<10-4 wt%) and high concentrations (>0.1 wt%). At low concentrations this is a consequence of the slow transport by diffusion of PVP molecules from the depth of the bulk phase to the surface. At high concentrations the time effect is unexpected and probably the result of PVP contamination of high surface activity. The dynamic surface elasticity of PVP solutions gradually decreases with increasing concentration up to the range of high concentrations (>0.1 wt%) where an abrupt increase in the elasticity caused by the adsorbed impurity is observed. At low and medium concentrations the viscoelastic behavior of PVP adsorbed films is similar to that of the previously investigated poly(ethylene oxide) and poly(ethylene glycol) films and is determined by the number of loops and tails protruding into the bulk phase.

AB - The dynamic surface tension and the complex dynamic surface elasticity of poly(vinylpyrrolidone) (PVP) solutions were measured in the concentration range 10-5 wt% up to about 1 wt%. The surface tension changed slowly with time at low (<10-4 wt%) and high concentrations (>0.1 wt%). At low concentrations this is a consequence of the slow transport by diffusion of PVP molecules from the depth of the bulk phase to the surface. At high concentrations the time effect is unexpected and probably the result of PVP contamination of high surface activity. The dynamic surface elasticity of PVP solutions gradually decreases with increasing concentration up to the range of high concentrations (>0.1 wt%) where an abrupt increase in the elasticity caused by the adsorbed impurity is observed. At low and medium concentrations the viscoelastic behavior of PVP adsorbed films is similar to that of the previously investigated poly(ethylene oxide) and poly(ethylene glycol) films and is determined by the number of loops and tails protruding into the bulk phase.

KW - Adsorption kinetics

KW - Competitive adsorption of impurities

KW - Polymer adsorption layers

KW - Surface viscoelasticity

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DO - 10.1006/jcis.2002.8614

M3 - Article

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