Interrelationship between heat of micelle formation and critical concentration

Journal Article · Sat Feb 01 04:00:00 EST 1975 · J. Colloid Interface Sci.; (United States)

DOI:https://doi.org/10.1016/0021-9797(75)90228-3· OSTI ID:6921998

Moroi, Y; Nishikido, N; Uehara, H; Matuura, R

A surface-active agent is considered to be a molecule generally having hydrophobic and hydrophilic groups in itself. The micellization of surfactants is controlled by these 2 groups, the former being the driving force for micellization and the latter being the opposite factor in an aqueous solution. With regard to the contribution on the hydrophilic group to the micelle formation, much difference must exist depending on ionic or nonionic species, because of the great difference in CMC value that exists between ionic and nonionic detergents with the same hydrocarbon chain. The object of this study is to separate the effect of these groups and to estimate the effect of each from the heat of micellization. Attention is called to the effect of structured water around the surfactant in the bulk water on the heat of micelle formation. The discussion also considers whether or not the water molecule is introduced into the thermodynamic equation of the micelle formation.

• Research Organization: Kyushu Univ
• OSTI ID: 6921998
• Journal Information: J. Colloid Interface Sci.; (United States), Journal Name: J. Colloid Interface Sci.; (United States) Vol. 50:2; ISSN JCISA
• Country of Publication: United States
• Language: English

Related Subjects

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
AQUEOUS SOLUTIONS
CHEMICAL PROPERTIES
DISPERSIONS
FLUID INJECTION
MICELLAR SYSTEMS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
SOLUTIONS
SURFACTANTS
THERMODYNAMICS