Temperature dependence of emulsion morphologies and the dispersion morphology diagram

Journal Article · Thu Feb 07 00:00:00 EST 1991 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100156a079· OSTI ID:5234644

Smith, D H ^[1]; Covatch, G C; Lim, Kyunghee ^[2]

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1. Univ. of Oklahoma, Norman (USA)
2. Dept. of Energy, Morgantown, WV (USA)

The recently constructed dispersion morphology diagram predicts that for amphiphile/oil/water systems there exists a range of concentrations within which only OL/AQ (oil-in-water) emulsions form and another range of concentrations for which the emulsion morphology is always AQ/OL (water-in-soil), regardless of whether the temperature is below the lower critical end-point temperature, above the upper critical end point, or between these two temperatures. These predictions contradict the PIT (phase inversion temperature) idea, that below the PIT amphiphile/oil/water systems for only oil-in-water emulsions and above the PIT they form only water-in-oil emulsions. By using electrical conductivity measurements to determine the emulsion morphologies at different temperatures for systems of constant composition, the authors show for the system studied that the previous predictions of the dispersion morphology diagram are correct.

• OSTI ID: 5234644
• Journal Information: Journal of Physical Chemistry; (United States), Vol. 95:3; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
EMULSIONS
ELECTRIC CONDUCTIVITY
SODIUM CHLORIDES
CRITICAL TEMPERATURE
EXPERIMENTAL DATA
MORPHOLOGY
PHASE DIAGRAMS
TEMPERATURE DEPENDENCE
ALKALI METAL COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
COLLOIDS
DATA
DIAGRAMS
DISPERSIONS
ELECTRICAL PROPERTIES
HALIDES
HALOGEN COMPOUNDS
INFORMATION
NUMERICAL DATA
PHYSICAL PROPERTIES
SODIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
400105* - Separation Procedures