Theory of microemulsions
Conference
·
· ACS Symp. Ser.; (United States)
OSTI ID:5666401
A microemulsion can be described as a 3-phase system of oil, water, and interphase in thermodynamic equilibrium. Its formation has been ascribed to the spontaneous curvature of the interphase, dispersing one bulk phase in the other in the form of microdroplets. A physical model to illustrate this mechanism viewed the stress of different, lateral 2-dimensional pressures among the polar heads and nonpolar tails of the molecular tenants of a flat interphase as acting against lower tensions at each of its sides to expand the areas there until the lateral pressures become equal in the curved interphase. At this point, the total 2-dimensional pressure is just balanced by the tension tending to shrink the interfacial area, i.e., the interfacial tension becomes zero. It is now proposed that a microemulsion results from the liquefying influence of a certain ratio of alcohol to soap or nonionic emulsifier in the interphase which triggers the collapse of the soft ice structure in the aqueous phase adjacent to it. This allows bulk-phase water molecules to flow among the heads of the interphase tenants and oil phase molecules to penetrate the tails. Under these circumstances, the direction and magnitude of interphase curvature depends upon the relative degree of penetration of the interphase by bulk-phase molecules.
- Research Organization:
- Lever Brothers Corp
- OSTI ID:
- 5666401
- Report Number(s):
- CONF-710913-
- Conference Information:
- Journal Name: ACS Symp. Ser.; (United States) Journal Volume: COLL62
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ALCOHOLS
AQUEOUS SOLUTIONS
CHEMISTRY
COLLOIDS
DISPERSIONS
ENHANCED RECOVERY
EQUILIBRIUM
FLUID FLOW
FLUID INJECTION
HYDROXY COMPOUNDS
ICE
INTERACTIONS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
MOLECULAR STRUCTURE
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLE INTERACTIONS
PHASE TRANSFORMATIONS
POLARIZED PRODUCTS
PRESSURE DEPENDENCE
RECOVERY
SOAPS
SOLUBILITY
SOLUTIONS
SURFACE PROPERTIES
SURFACTANTS
THERMODYNAMIC ACTIVITY
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ALCOHOLS
AQUEOUS SOLUTIONS
CHEMISTRY
COLLOIDS
DISPERSIONS
ENHANCED RECOVERY
EQUILIBRIUM
FLUID FLOW
FLUID INJECTION
HYDROXY COMPOUNDS
ICE
INTERACTIONS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
MOLECULAR STRUCTURE
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLE INTERACTIONS
PHASE TRANSFORMATIONS
POLARIZED PRODUCTS
PRESSURE DEPENDENCE
RECOVERY
SOAPS
SOLUBILITY
SOLUTIONS
SURFACE PROPERTIES
SURFACTANTS
THERMODYNAMIC ACTIVITY
WELLS