Phase behavior and microstructure of nonaqueous microemulsions

Journal Article · Thu Feb 22 04:00:00 EST 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100367a075· OSTI ID:6947797

Martino, A; Kaler, E W ^[1]

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1. Univ. of Washington, Seattle (USA)

Phase behavior of glycerol, propylene glycol, hydrocarbon, and alkylpolyglycol ether (C{sub i}E{sub j}) surfactant microemulsions has been studied. Surfactant solubility in the polar organic phase (a mixture of glycerol and propylene glycol) decreases when glycerol content is increased, and a 2-3-2 phase transition is observed at constant temperature. The phase behavior usually observed in water microemulsions as a function of temperature is observed here as a function of the fraction of glycerol in the polar organic phase. Phase behavior is reported as a function of oil solvophobicity and the surfactant solvophilic-lipophilic balance and is compared to a well-established model developed for aqueous microemulsions. Porod analysis of small-angle X-ray scattering (SAX) measurements indicates the presence of interfaces; thus the fluids are microstructured. The SAXS measurements suggest that aqueous and nonaqueous microemulsions are structurally similar.

• OSTI ID: 6947797
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:4; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400200* -- Inorganic
Organic
& Physical Chemistry
ALCOHOLS
CALCULATION METHODS
COLLOIDS
CRYSTAL STRUCTURE
DATA
DATA ANALYSIS
DISPERSIONS
EMULSIONS
EXPERIMENTAL DATA
GLYCEROL
GLYCOLS
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
MICROEMULSIONS
MICROSTRUCTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
PHASE STUDIES
TEMPERATURE DEPENDENCE