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:6822794

Nilsson, P G; Lindman, B

Self-diffusion studies were performed to obtain insight into the aggregate structure of the various isotrophic solutions in nonionic surfactant-hydrocarbon-water systems often referred to as microemulsions. The systems chosen were 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-temperture 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: 6822794
• 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
RESONANCE
SELF-DIFFUSION
SPIN ECHO
STRUCTURAL CHEMICAL ANALYSIS
SURFACTANTS
WATER