Conditions to produce so-called microemulsions--factors to increase mutual solubility of oil and water by solubilizer
It was confirmed from the studies of phase diagrams that the Schulman's so-called microemulsion is not an emulsion, but a solubilized system or a surfactant phase. It is desirable to find conditions to produce so-called microemulsions in which the solution is stable and solubilization is large so that oil and water mix over wide composition range. As much as about 25% by wt of surfactant was necessary to produce Schulman's so-called microemulsions. Following conditions were found in order to produce microemulsions with far less amount of solubilizer (about 5% by wt): (1) optimum Hydrophile- Lipophile-Balance (HLB) of a surfactant; (2) optimum mixing ratio of surfactants, i.e., optimum HLB of the mixture; (3) optimum temperature for a given nonionic solubilizer; (4) the closer the HLBs of 2 surfactants, the lower the necessary amount of surfactant; (5) mixtures of ionic and nonionic surfactants yield better results, provided the HLBs of 2 surfactants are close to each other; and (6) the larger the sizes of hydrophile and lipophile groups, the more efficient the solubilization.
- Research Organization:
- Yokohama Natl Univ
- OSTI ID:
- 5666409
- Report Number(s):
- CONF-710913-
- Journal Information:
- ACS Symp. Ser.; (United States), Journal Name: ACS Symp. Ser.; (United States) Vol. COLL59; ISSN ACSMC
- Country of Publication:
- United States
- Language:
- English
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ADDITIVES
CHARGED PARTICLES
CHEMISTRY
COLLOIDS
DISPERSIONS
DRUGS
ENHANCED RECOVERY
FLUID INJECTION
HYDROGEN COMPOUNDS
IONS
LIPOTROPIC FACTORS
MICELLAR SYSTEMS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
MIXING
MIXTURES
MOLECULAR STRUCTURE
NATURAL GAS WELLS
OIL WELLS
OILS
OPTIMIZATION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUANTITY RATIO
RECOVERY
SIZE
SOLUBILITY
STABILIZATION
SURFACE PROPERTIES
SURFACTANTS
TEMPERATURE EFFECTS
WATER
WELLS