Two types of surfactant phases and four coexisting liquid phases in a water/nonionic surfactant/triglyceride/hydrocarbon system

Journal Article · Thu Jan 14 00:00:00 EST 1988 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100312a040· OSTI ID:5371707

Kunieda, H; Asaoka, H; Shinoda, K

A three-phase region consisting of reversed micellar solution (Om), surfactant (D'), and excess water (W) phases was observed in a wide range of water/oil ratios in a water/R/sub 12/EO/sub 4//triglyceride (1,2,3-(tris(2-ethylhexanoyloxy)propane, TEH) system. The composition of middle phase (D') remains in the vicinity of a water-surfactant axis, and its phase behavior is different from that in a water/nonionic surfactant/saturated hydrocarbon system, in which the composition of surfactant phase (D) changes from water-rich to oil-rich with increasing lipophilicity of surfactant. The D' phase is identified with the surfactant phase known as the L/sub 3/ phase in which an oblate spheroid aggregate is present. In a four-component system of water/R/sub 12/EO//sub 4//TEH/hexadecane, a four phase region consisting of water, two surfactant (D and D'), and oil phases appears due to the overlapping of two three-phase regions. The mechanism for the formation of the four-phase region and the existence of four types of three-phase regions were concluded and actually discovered in a carefully selected system.

• Research Organization: Yokohama National Univ., Japan
• OSTI ID: 5371707
• Journal Information: J. Phys. Chem.; (United States), Vol. 92:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HEXADECANE
PHASE STUDIES
SURFACTANTS
TRIGLYCERIDES
WATER
EXPERIMENTAL DATA
MICELLAR SYSTEMS
PHASE DIAGRAMS
QUANTITY RATIO
TEMPERATURE DEPENDENCE
ALKANES
DATA
DIAGRAMS
ESTERS
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
LIPIDS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
400201* - Chemical & Physicochemical Properties