Thermometric titration studies of the effect of head group, chain length, solvent, and temperature on the thermodynamics of micelle formation

Journal Article · Sun Sep 01 00:00:00 EDT 1974 · J. Colloid Interface Sci.; (United States)

DOI:https://doi.org/10.1016/0021-9797(74)90193-3· OSTI ID:5006447

Kresheck, G C; Hargraves, W A

It has been demonstrated by Benjamin that thermometric titrations are well suited for the study of the thermodynamics of micelle formation in aqueous solutions due to the rapidity with which determination can be made and the accuracy of direct measurement of the enthalpy change. The particular instrument used was designed to allow for temperature control from 20/sup 0/ to 35/sup 0/, long-term (8-hr) stability, and moderate (5 to 10 min) thermal equilibration time. A schematic diagram of the calorimeter used for the enthalpy titrations is illustrated. The changes in enthalpy, entropy, and heat capacity that accompany micelle formation for sodium, octyl, decyl, and dodecyl sulfate, dimethyldecyl and dimethyldodecyl phosphine oxide, sodium dodecoyl sarcosinate, and dodecylpyridinium chloride and bromide were determined by thermometric titrations between 21/sup 0/ and 35/sup 0/ in an aqueous solution. (50 refs.)

• Research Organization: Northern Illinois Univ.
• OSTI ID: 5006447
• Journal Information: J. Colloid Interface Sci.; (United States), Vol. 48:3
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
MICELLAR SYSTEMS
THERMODYNAMICS
THERMOMETRIC TITRATION
CALORIMETERS
ENTHALPY
ENTROPY
ORGANOMETALLIC COMPOUNDS
SODIUM SULFATES
SOLVENTS
SPECIFIC HEAT
ALKALI METAL COMPOUNDS
MEASURING INSTRUMENTS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SODIUM COMPOUNDS
SULFATES
SULFUR COMPOUNDS
THERMODYNAMIC PROPERTIES
TITRATION
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400102 - Chemical & Spectral Procedures