Dynamic properties of adsorption layers of heptadecafluoro-1-nonanol. Effect of surface phase transitions

Research output

2 Citations (Scopus)

Abstract

The dilational surface rheology was applied to study the properties of adsorbed layers of a fluorinated surfactant (heptadecafluoro-1-nonanol) with a surface phase transition at the water – air interface. At relatively low surface tensions (<~57 mN/m) the dynamic surface elasticity reached anomalously high values (~200 mN/m) and exhibited a local minimum at higher surface tensions in the region of a two-dimensional phase transition. A mathematical model was developed to describe dilational properties of the adsorbed layer in the region of coexistence of two surface phases. The application of this model to solutions of the fluorinated surfactant allowed estimation of the kinetic parameters of the relaxation processes in the surface layer.

Original languageEnglish
Pages (from-to)316-322
Number of pages7
JournalJournal of Molecular Liquids
Volume282
DOIs
Publication statusPublished - 15 May 2019

Fingerprint

dynamic characteristics
Phase transitions
Adsorption
adsorption
interfacial tension
Surface-Active Agents
surfactants
Surface tension
Surface active agents
rheology
Relaxation processes
mathematical models
surface layers
Rheology
Kinetic parameters
elastic properties
Elasticity
1-nonanol
air
Mathematical models

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

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title = "Dynamic properties of adsorption layers of heptadecafluoro-1-nonanol. Effect of surface phase transitions",
abstract = "The dilational surface rheology was applied to study the properties of adsorbed layers of a fluorinated surfactant (heptadecafluoro-1-nonanol) with a surface phase transition at the water – air interface. At relatively low surface tensions (<~57 mN/m) the dynamic surface elasticity reached anomalously high values (~200 mN/m) and exhibited a local minimum at higher surface tensions in the region of a two-dimensional phase transition. A mathematical model was developed to describe dilational properties of the adsorbed layer in the region of coexistence of two surface phases. The application of this model to solutions of the fluorinated surfactant allowed estimation of the kinetic parameters of the relaxation processes in the surface layer.",
keywords = "Dilational surface rheology, Fluorinated surfactants, Gibbs monolayers, Phase transitions",
author = "Noskov, {Boris A.} and Akentiev, {Alexander V.} and Lin, {Shi Yow}",
year = "2019",
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journal = "Journal of Molecular Liquids",
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T1 - Dynamic properties of adsorption layers of heptadecafluoro-1-nonanol. Effect of surface phase transitions

AU - Noskov, Boris A.

AU - Akentiev, Alexander V.

AU - Lin, Shi Yow

PY - 2019/5/15

Y1 - 2019/5/15

N2 - The dilational surface rheology was applied to study the properties of adsorbed layers of a fluorinated surfactant (heptadecafluoro-1-nonanol) with a surface phase transition at the water – air interface. At relatively low surface tensions (<~57 mN/m) the dynamic surface elasticity reached anomalously high values (~200 mN/m) and exhibited a local minimum at higher surface tensions in the region of a two-dimensional phase transition. A mathematical model was developed to describe dilational properties of the adsorbed layer in the region of coexistence of two surface phases. The application of this model to solutions of the fluorinated surfactant allowed estimation of the kinetic parameters of the relaxation processes in the surface layer.

AB - The dilational surface rheology was applied to study the properties of adsorbed layers of a fluorinated surfactant (heptadecafluoro-1-nonanol) with a surface phase transition at the water – air interface. At relatively low surface tensions (<~57 mN/m) the dynamic surface elasticity reached anomalously high values (~200 mN/m) and exhibited a local minimum at higher surface tensions in the region of a two-dimensional phase transition. A mathematical model was developed to describe dilational properties of the adsorbed layer in the region of coexistence of two surface phases. The application of this model to solutions of the fluorinated surfactant allowed estimation of the kinetic parameters of the relaxation processes in the surface layer.

KW - Dilational surface rheology

KW - Fluorinated surfactants

KW - Gibbs monolayers

KW - Phase transitions

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