Stability of w/o type emulsions as a function of temperature and of the hydrophilic chain length of the emulsifier

Journal Article · Wed Apr 01 04:00:00 EST 1970 · J. Colloid Interface Sci.; (United States)

DOI:https://doi.org/10.1016/0021-9797(70)90158-X· OSTI ID:5002005

Saito, H; Shinoda, K

The stability of W/O type emulsions of the cyclohexane-water system stabilized with polyoxyethylene nonylphenylether was studied as a function of temperature and of the hydrophilic chain length of the emulsifier. The interfacial tension of the same system was also studied as a function of temperature. It was found that: (1) the interfacial tension between the water and the oil phases changes markedly with temperature and becomes nearly zero (below 0.01 dyne/cm) close to the phase inversion temperature (PIT); (2) the mean droplet diameter is also small at the PIT but increases with temperature; and (3) the coalescence rate of the emulsion droplets is very fast close to the PIT. Relatively stable W/O type emulsions were obtained when the PIT's of the emulsions are about 10/sup 0/ to 40/sup 0/C lower than the storage temperature.

• Research Organization: Yokohama National Univ.
• OSTI ID: 5002005
• Journal Information: J. Colloid Interface Sci.; (United States), Journal Name: J. Colloid Interface Sci.; (United States) Vol. 32:4; ISSN JCISA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
ALKANES
COALESCENCE
COLLOIDS
CYCLOALKANES
CYCLOHEXANE
DISPERSIONS
DROPLETS
EMULSIFIERS
EMULSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GELS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROPHYLIC POLYMERS
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PARTICLES
PETROLEUM
POLYMERS
STABILITY
SURFACE PROPERTIES
SURFACE TENSION
WATER
WELLS
WETTABILITY