Solution structure of nonionic surfactant microemulsions from nuclear magnetic resonance self-diffusion studies

Journal Article · Wed Jan 20 23:00:00 EST 1982 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100391a028· OSTI ID:6696823

Nilsson, P G; Lindman, B

Self-diffusion studies were performed to obtain insight into the aggregate structure of the various isotropic solutions in nonionic surfactant-hydrocarbon-water systems often referred to as microemulsions. The systems chosen were tetraethylene glucol dodecyl ether-hexadecane-water, tetraethylene glycol dodecyl ether-decane-water, and tetraethylene glycol decyl-ether-hexadecane-water. Self-diffusion coefficients were determined for all components by means of the nuclear magnetic resonance spin-echo pulsed field gradient method. From a comparison of the self-diffusion coefficients of the different components, conclusions can be drawn about solution structure in the different isotropic regions. For the systems studied, the isotropic water-rich and hydrocarbon-rich phases are connected in a composition-temperature diagram by an isotropic channel, the surfactant phase. In the surfactant phase there is rapid diffusion of both water and hydrocarbon. 36 references.

• OSTI ID: 6696823
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 86:2; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
COLLOIDS
DECANE
DIAGRAMS
DIFFUSION
DISPERSIONS
EMULSIONS
ETHERS
HYDROCARBONS
HYDROGEN COMPOUNDS
ISOTROPY
MAGNETIC RESONANCE
MICROEMULSIONS
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STUDIES
RESONANCE
SELF-DIFFUSION
SPIN ECHO
STRUCTURAL CHEMICAL ANALYSIS
SURFACTANTS
WATER