Effect of alcohol on the properties of micellar systems. Part 1. Critical micellization concentration, micelle molecular weight and ionization degree

Journal Article · Sun Mar 01 04:00:00 EST 1981 · J. Colloid Interface Sci.; (United States)

DOI:https://doi.org/10.1016/0021-9797(81)90177-6· OSTI ID:6827443

Zana, R; Yiv, S; Strazielle, C; Lianos, P

Additions of alcohols of medium chain length (butanol to hexanol) to micellar solutions result in a decrease of critical micelle concentration and micelle molecular weight, and an increase of the micelle ionization degree. Moreover, the micelle molecular weight (or surfactant aggregation number) at a given alcohol concentration increases with the surfactant concentration and may reach values larger than in the absence of alcohol. Striking differences have been found in the changes of molecular weight of TTAB micelles in H/sub 2/O-pentanol mixtures in the presence of 0.1 M KBr and in the absence of salt. These various results have been explained by considering the effect of the micelle solubilized alcohol on the micelle surface charge density and on the dielectric constant of the palisade layer. 48 references.

• OSTI ID: 6827443
• Journal Information: J. Colloid Interface Sci.; (United States), Journal Name: J. Colloid Interface Sci.; (United States) Vol. 80:1; ISSN JCISA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALCOHOLS
ALKALI METAL COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
CATALYTIC EFFECTS
CHEMICAL PROPERTIES
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
HALIDES
HALOGEN COMPOUNDS
HYDROXY COMPOUNDS
IONIZATION
MICELLAR SYSTEMS
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM BROMIDES
POTASSIUM COMPOUNDS
POTENTIALS
QUANTITY RATIO
SURFACE POTENTIAL
SURFACTANTS