Dynamic light scattering from cetyltrimethylammonium bromide micelles: intermicellar interactions at low ionic strengths
Journal Article
·
· J. Phys. Chem.; (United States)
Quasi-elastic light scattering measurements have been performed on aqueous solutions of CTAB (cetyltrimethylammonium bromide). Theoretic fits to the measured diffusion coefficients at low NaBr were obtained by using the generalized Stokes-Einstein equation expanded to first order in the surfactant concentration (including both thermodynamic and hydrodynamic terms), with a pair-interaction potential taken from Dlvo theory. Good fits are obtained at low NaBr concentrations by assuming a constant micellar radius for each temperature and assuming that the remaining parameters (aggregation number, fractional ionization, and Hamaker coefficient) are independent of temperature. This procedure yields an unambiguous value for the fractional ionization alpha for CTAB micelles: alpha = 0.22. The limits of validity of the theoretic fitting procedure (previously applied by Corti and Degiorgio to the system sodium n-dodecyl sulfate (SDS) + NaCl) are discussed. 65 references.
- OSTI ID:
- 5968180
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 86:13; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Structural transitions of CTAB micelles in the presence of n-octylamine: A small angle neutron scattering study
A femtosecond study of photoinduced electron transfer from dimethylaniline to coumarin dyes in a cetyltrimethylammonium bromide micelle
Effect of electric charges on the growth process of micelles
Journal Article
·
Sun Jan 31 23:00:00 EST 1993
· Journal of Colloid and Interface Science; (United States)
·
OSTI ID:6305266
A femtosecond study of photoinduced electron transfer from dimethylaniline to coumarin dyes in a cetyltrimethylammonium bromide micelle
Journal Article
·
Mon Aug 07 00:00:00 EDT 2006
· Journal of Chemical Physics
·
OSTI ID:20864281
Effect of electric charges on the growth process of micelles
Journal Article
·
Sat May 01 00:00:00 EDT 1993
· Journal of Colloid and Interface Science; (United States)
·
OSTI ID:6131188
Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKALI METAL COMPOUNDS
AQUEOUS SOLUTIONS
BROMIDES
BROMINE COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
COLLOIDS
DIRECT REACTIONS
DISPERSIONS
EMULSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
LIGHT SCATTERING
MICELLAR SYSTEMS
MIXTURES
MOLECULAR STRUCTURE
NUCLEAR REACTIONS
ORGANIC BROMINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
PARTICLE SIZE
PETROLEUM
PHASE STUDIES
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RECOVERY
SCATTERING
SIZE
SODIUM BROMIDES
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM SULFATES
SOLUTIONS
SULFATES
SULFUR COMPOUNDS
SURFACTANTS
TESTING
VISCOSITY
WATERFLOODING
020300* -- Petroleum-- Drilling & Production
ALKALI METAL COMPOUNDS
AQUEOUS SOLUTIONS
BROMIDES
BROMINE COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
COLLOIDS
DIRECT REACTIONS
DISPERSIONS
EMULSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
LIGHT SCATTERING
MICELLAR SYSTEMS
MIXTURES
MOLECULAR STRUCTURE
NUCLEAR REACTIONS
ORGANIC BROMINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
PARTICLE SIZE
PETROLEUM
PHASE STUDIES
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RECOVERY
SCATTERING
SIZE
SODIUM BROMIDES
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM SULFATES
SOLUTIONS
SULFATES
SULFUR COMPOUNDS
SURFACTANTS
TESTING
VISCOSITY
WATERFLOODING