Micelle formation of oil-soluble surfactants in nonaqueous solutions) effect of molecular structure of surfactants

Journal Article · Thu Apr 01 00:00:00 EST 1971 · J. Colloid Interface Sci.; (United States)

DOI:https://doi.org/10.1016/0021-9797(71)90222-0· OSTI ID:5831226

Kon-No, K; Kitahara, A

The micellar weight of dialkylsulfosuccinates, dialkyldimethylammonium halides, and polyoxyethylene 2(1,3-dioctoxypropyl) ether in nonaqueous solutions was measured by the vapor pressure depression method. The apparent aggregation number of anionic surfactants approached saturation values above a fixed range of concentration; whereas, that of cationic surfactants generally increased with increase of concentration. However, the nonionic surfactant formed no micelles in various solvents. The aggregation number (lambda) of both anionic and cationic surfactants generally decreased with increase in the total carbon number of the alkyl group. The aggregation number of the anionic surfactant having the less bulky hydrocarbon group was larger than that of the anionic surfactant having the more bulky hydrocarbon group. The order of magnitude of lambda of surfactants having hydrocarbon groups of equal size was anionics >> cationics > nonionics in various solvents. These results were compared with the results reported by other authors. (21 refs.)

• Research Organization: Tokyo Sci Univ.
• OSTI ID: 5831226
• Journal Information: J. Colloid Interface Sci.; (United States), Vol. 35:4
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
MICROEMULSION FLOODING
SURFACTANTS
SOLUBILITY
CHEMICAL REACTIONS
CHEMICAL STATE
COALESCENCE
IONIC COMPOSITION
IONS
MICELLAR SYSTEMS
MOLECULAR STRUCTURE
NONAQUEOUS SOLVENTS
OIL WELLS
SOLUTIONS
SURFACE PROPERTIES
CHARGED PARTICLES
DISPERSIONS
FLUID INJECTION
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
SOLVENTS
WELLS
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