Temperature dependence of emulsion morphologies and the dispersion morphology diagram for three-phase emulsions

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:214585

Smith, D H; Johnson, G K ^[1]

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1. Morgantown Energy Technology Center, WV (United States)

Using several different compositions of the (pseudo)ternary amphiphile/oil/{open_quotes}water{close_quotes} system C{sub 6}H{sub 13}(OC{sub 2}H{sub 4}){sub 2}OH/n-tetradecane/aqueous 10 mM NaCl that form oil-rich top phases (J), water-rich bottom phases ({Beta}), and middle-phase microemulsions (m), we showed by means of electrical conductivity measurements that the temperature dependencies of the three-phase emulsion morphologies were consistent with predictions from isothermal dispersion morphology diagrams, thus contradicting ideas derived from the PIT (phase inversion temperature) model for two-phase emulsions. In particular, we formed three-phase emulsions in which either (1) the continuous phase was an oil-rich phase (actually, m) below the PIT and the water-rich phase ({Beta}) above that temperature; (2) the water-rich phase was continuous both below and above the PIT; or (3) oil-rich phase was the continuous phase both below and above the PIT.

• OSTI ID: 214585
• Report Number(s): CONF-950801--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
MICROEMULSIONS
MORGANTOWN ENERGY TECHNOLOGY CENTER
MORPHOLOGY
TEMPERATURE DEPENDENCE