Microenvironmental nonideality effects in adsorption of surfactants and micellar solubilization
Thesis/Dissertation
·
OSTI ID:6170688
The adsorption tendencies of fluorinated and hydrocarbon chain surfactants at the graphon-water interface were investigated. At low concentrations the affinity of sodium perfluoro-octandate was substantially lower than that of sodium decyl sulfate, a finding consistent with the general weakness of interaction between fluorocarbons and hydrocarbons. The unusual shape of the sodium perfluoro-octanoate isotherm was noted to be in reasonable agreement with several model isotherms that consider both electric and chain-chain interactions of a moderately cooperative nature. The adsorption isotherm of sodium dodecyl sulfate on graphon was biphasic and could not be explained using monolayer models. The formation of a bilayer, after completion of a strongly adsorbed primary layer of surfactant molecules in a roughly parallel orientation, was given as a possible explanation of the observed isotherm. Adsorption data for sodium decyl sulfate, sodium perfluoro-octanoate, and sodium dodecyl sulfate obtained in the presence and absence of sodium chloride were found to define unique isotherms when plotted against the mean ionic activity of the surfactants.
- OSTI ID:
- 6170688
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADSORPTION
ALKALI METAL COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUORIDES
FLUORINE COMPOUNDS
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
INTERFACES
ISOTHERM
MICELLAR SYSTEMS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
RECOVERY
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM FLUORIDES
SODIUM SULFATES
SOLUBILITY
SORPTION
SULFATES
SULFONATES
SULFUR COMPOUNDS
SURFACE PROPERTIES
SURFACE TENSION
SURFACTANTS
WATERFLOODING
WELLS
WETTING AGENTS
020300* -- Petroleum-- Drilling & Production
ADSORPTION
ALKALI METAL COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUORIDES
FLUORINE COMPOUNDS
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
INTERFACES
ISOTHERM
MICELLAR SYSTEMS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
RECOVERY
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM FLUORIDES
SODIUM SULFATES
SOLUBILITY
SORPTION
SULFATES
SULFONATES
SULFUR COMPOUNDS
SURFACE PROPERTIES
SURFACE TENSION
SURFACTANTS
WATERFLOODING
WELLS
WETTING AGENTS