Effect of pressure on the solution behavior of nonionic surfactants in water
Various properties of micellar solutions of nonionic surfactant under pressure are being studied, e.g., the pressure effect on distinct region of the micellar solution must be defined in terms of the thermodynamic variables of temperature, composition, and pressure. Temperature-pressure-composition phase diagrams of polyoxyethylene-type nonionic surfactants and water systems have been constructed. From the relation of the cloud temperature-pressure-composition the thermodynamic quantities accompanied by the separation of the liquid surfactant phase from the water phase above the cloud temperature were derived. The factors contributing to the phase separation are discussed. 34 references.
- OSTI ID:
- 5953993
- Journal Information:
- J. Colloid Interface Sci.; (United States), Journal Name: J. Colloid Interface Sci.; (United States) Vol. 78:2; ISSN JCISA
- Country of Publication:
- United States
- Language:
- English
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ALCOHOLS
APPARENT MOLAL VOLUME
COLLOIDS
DIAGRAMS
DISPERSIONS
EMULSIONS
ENHANCED RECOVERY
FLUID INJECTION
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INTERFACES
MICELLAR SYSTEMS
MICROEMULSIONS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PARTICLE SIZE
PHASE DIAGRAMS
PHASE STUDIES
PRESSURE EFFECTS
RECOVERY
SIZE
SURFACE PROPERTIES
SURFACE TENSION
SURFACTANTS
WATER
WATERFLOODING
WETTABILITY