Phase behavior and microstructure of nonaqueous microemulsions

Journal Article · Thu Feb 22 00:00:00 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), Vol. 94:4; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

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