The standard gibbs free energy of adsorption and isotherms of adsorption of amphiphilic molecules and clusters at the oil/water and gas/water interfaces

Adsorption of dry and hydrated chlorophyll

V. S. Markin, M. I. Gugeshashvili, A. G. Volkov, G. Munger, Roger Leblanc

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The thermodynamics of adsorption of large surface active compounds at the interface between two immiscible liquids is considered. These molecules are supposed to substitute at the interface a number of adsorbed molecules of both solvents. Gibbs free energy and the isotherm of adsorption of surface active amphiphilic compounds were calculated. The adsorption isotherms of dry and wet chlorophyll a at the octane/water and air/water interfaces are measured. The difference between the adsorption behavior of chlorophyll a dissolved in dry and wet octane is discovered. The thermodynamic parameters of chlorophyll monomer and hydrated oligomer of chlorophyll a adsorption at octane/water interface are determined.

Original languageEnglish
Pages (from-to)264-275
Number of pages12
JournalJournal of Colloid and Interface Science
Volume154
Issue number1
DOIs
StatePublished - Jan 1 1992
Externally publishedYes

Fingerprint

chlorophylls
Chlorophyll
Gibbs free energy
Isotherms
Oils
isotherms
oils
Gases
Adsorption
octanes
Molecules
adsorption
Water
gases
water
molecules
Thermodynamics
thermodynamics
Adsorption isotherms
Oligomers

ASJC Scopus subject areas

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

Cite this

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abstract = "The thermodynamics of adsorption of large surface active compounds at the interface between two immiscible liquids is considered. These molecules are supposed to substitute at the interface a number of adsorbed molecules of both solvents. Gibbs free energy and the isotherm of adsorption of surface active amphiphilic compounds were calculated. The adsorption isotherms of dry and wet chlorophyll a at the octane/water and air/water interfaces are measured. The difference between the adsorption behavior of chlorophyll a dissolved in dry and wet octane is discovered. The thermodynamic parameters of chlorophyll monomer and hydrated oligomer of chlorophyll a adsorption at octane/water interface are determined.",
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T1 - The standard gibbs free energy of adsorption and isotherms of adsorption of amphiphilic molecules and clusters at the oil/water and gas/water interfaces

T2 - Adsorption of dry and hydrated chlorophyll

AU - Markin, V. S.

AU - Gugeshashvili, M. I.

AU - Volkov, A. G.

AU - Munger, G.

AU - Leblanc, Roger

PY - 1992/1/1

Y1 - 1992/1/1

N2 - The thermodynamics of adsorption of large surface active compounds at the interface between two immiscible liquids is considered. These molecules are supposed to substitute at the interface a number of adsorbed molecules of both solvents. Gibbs free energy and the isotherm of adsorption of surface active amphiphilic compounds were calculated. The adsorption isotherms of dry and wet chlorophyll a at the octane/water and air/water interfaces are measured. The difference between the adsorption behavior of chlorophyll a dissolved in dry and wet octane is discovered. The thermodynamic parameters of chlorophyll monomer and hydrated oligomer of chlorophyll a adsorption at octane/water interface are determined.

AB - The thermodynamics of adsorption of large surface active compounds at the interface between two immiscible liquids is considered. These molecules are supposed to substitute at the interface a number of adsorbed molecules of both solvents. Gibbs free energy and the isotherm of adsorption of surface active amphiphilic compounds were calculated. The adsorption isotherms of dry and wet chlorophyll a at the octane/water and air/water interfaces are measured. The difference between the adsorption behavior of chlorophyll a dissolved in dry and wet octane is discovered. The thermodynamic parameters of chlorophyll monomer and hydrated oligomer of chlorophyll a adsorption at octane/water interface are determined.

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