Effect of added salts in water on the hydrophile-lipophile balance of nonionic surfactants: the effect of added salts on the phase inversion temperature of emulsions

Journal Article · Wed Apr 01 00:00:00 EST 1970 · J. Colloid Interface Sci.; (United States)

DOI:https://doi.org/10.1016/0021-9797(70)90157-8· OSTI ID:5002186

Shinoda, K; Takeda, H

Although an HLB-value is assigned to a definite surfactant, the real hydrophile-lipophile balance (HLB) of surfactant at the oil-water interface changes with the amount and kinds of added salts in water as well as with the types of oils. On the other hand, the phase inversion temperature (PIT) of emulsions accurately reflects that the real HLB of surfactants in a given system changes sensitively with the amount and kinds of added salts. The effect of added salts, acid, and alkali on the hydrophile-lipophile balance of nonionic surfactant has been studied from the measurements of the effect of these additives on the PIT of emulsions and on the cloud points of the surfactant solutions. It was found, for example, that both the PIT of the emulsion studied and the cloud point of an aqueous solution of polyoxyethylene (9.7) nonylphenylether (5% by wt per system) were depressed about 14/sup 0/C in the presence of 6% by wt of sodium chloride in water. This means that the HLB value of the surfactant was depressed about 0.8 to 1.0 unit in the solution. (10 refs.)

• Research Organization: Yokohama National Univ.
• OSTI ID: 5002186
• Journal Information: J. Colloid Interface Sci.; (United States), Vol. 32:4
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
WATERFLOODING
ADDITIVES
EMULSIONS
MIXTURES
PETROLEUM
SALTS
SODIUM CHLORIDES
SURFACTANTS
WETTABILITY
ALKALI METAL COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
COLLOIDS
DISPERSIONS
ENERGY SOURCES
FLUID INJECTION
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
SODIUM COMPOUNDS
WELLS
020300* - Petroleum- Drilling & Production