Substituent group effects on the solubilization of polar aromatic solutes (phenols, anilines, and benzaldehydes) by N-hexadecylpyridinium chloride
- Univ. of Oklahoma, Norman (USA)
Solubilization isotherms of polar aromatic solutes (phenols, anilines, and benzaldehydes) in N-hexadecylpyridinium chloride micelles have been determined at 25{degree}C by using the semiequilibrium dialysis method. Effects of various substituent groups (H, F, Cl, Br, CH{sub 3}O, NO{sub 2}, CH{sub 3}, Et, i-Pr, and CF{sub 3}) have been studied for the solubilization of phenol, aniline, and benzaldehyde derivatives in aqueous solutions of the surfactant. Both hydrophobic and electrostatic effects are shown to be important in influencing the solubilization behavior. The simple expression, K = K{sub 0}(1 {minus} BX){sup 2}, is used to correlate the solubilization equilibrium constant (K) with the mole fraction of solute in the micelles (X). Linear free energy relationships can be used to correlate the solubilization results for the different classes of compounds.
- OSTI ID:
- 5925972
- Journal Information:
- Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 95:1; ISSN JPCHA; ISSN 0022-3654
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALDEHYDES
AMINES
ANILINE
AROMATICS
BENZALDEHYDE
CHLORIDES
CHLORINE COMPOUNDS
DATA
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
MEASURING METHODS
MEDIUM TEMPERATURE
NUMERICAL DATA
ORGANIC COMPOUNDS
PHENOLS
SOLUBILITY
SURFACTANTS