/sup 13/C NMR of micellar solutions: micellar aggregation number from the concentration dependence of the /sup 13/C chemical shifts

Journal Article · Wed Nov 14 23:00:00 EST 1979 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100486a015· OSTI ID:6323561

Persson, B O; Drakenberg, T; Lindman, B

/sup 13/C NMR chemical shifts were determined as a function of concentration for aqueous solutions of sodium hexanoate, sodium octanoate, and nonylammonium bromide. Using the mass action law model for micelle formation, the aggregation numbers have been estimated by fitting calculated chemical shifts as a function of amphiphile concentration to the experimental values. For sodium octanoate and sodium hexanoate the calculations indicate the formation of an appreciable amount of premicellar aggregates with an aggregation number of 3 or 4. For nonylammonium bromide the results are explained by the formation of large aggregates only. 27 references.

• OSTI ID: 6323561
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 83:23; ISSN JPCHA
• Country of Publication: United States
• Language: English

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AGGLOMERATION
ALKALI METAL COMPOUNDS
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
AQUEOUS SOLUTIONS
BROMIDES
BROMINE COMPOUNDS
CARBON 13
CARBON ISOTOPES
CHEMICAL SHIFT
DISPERSIONS
DISPLACEMENT FLUIDS
EVEN-ODD NUCLEI
FLUIDS
HALIDES
HALOGEN COMPOUNDS
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MICELLAR SYSTEMS
MIXTURES
NUCLEAR MAGNETIC RESONANCE
NUCLEI
PARTICLES
QUANTITY RATIO
RESONANCE
SODIUM COMPOUNDS
SOLUTIONS
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS