Solubilization of pentanol by cationic surfactants and binary mixtures of cationic surfactants

Thesis/Dissertation · Fri Jan 01 00:00:00 EST 1993

DOI:https://doi.org/10.2172/10146350· OSTI ID:10146350

Morgan, Matthew Earle ^[1]

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1. Univ. of Oklahoma, Norman, OK (United States)

The research reported here has included studies of the solubilization of pentanol in hexadecylpyridinium chloride (CPC), trimethyletetradecylammonium chloride (C₁₄Cl), benzyldimethyltetradecylammonium chloride (C₁₄BzCl), benzyldimethylhexadecylpyridinium chloride (C₁₆BzCl), hexadecyltrimethylammonium bromide (CTAB), and binary mixtures of CPC + C₁₆BzCl and C₁₄Cl + C₁₄BzCl. Rather than using calorimetric methods, this project will employ headspace chromatography to measure solubilization of pentanol over a wide range of solute concentrations. While not yielding as much thermodynamic data as calorimetry, headspace chromatography is a more direct measure of the extent of solubilization. Using headspace chromatography, is a more direct measure of the extent of solubilization. Using headspace chromatography, this study will seek to determine whether strongly synergistic mixture ratios exist in the case of binary cationic surfactant systems. There are two equilibria in the pentanol-water-surfactant system: (1) The pentanol solubilized in micelles is in equilibrium with the monomeric pentanol in solution, and (2) the monomeric pentanol is in equilibrium with the pentanol in the vapor above the solution. To establish the link between the two equilibria, a sample of the vapor above pure liquid pentanol must be collected, in order to find the activity of pentanol in solution. Also, a calibration curve for various concentrations of pentanol in solution. From this type of data it is possible to infer both the concentration of pentanol solubilized in micelles and the concentrations of pentanol in the ``bulk`` solution outside the micelles. The method is equally applicable to systems containing a single surfactant as well as mixtures of surfactants.

• Research Organization: Univ. of Oklahoma, Norman, OK (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FG05-87ER13678
• OSTI ID: 10146350
• Report Number(s): DOE/ER/13678-72; ON: DE94010824; BR: KC0302020; TRN: AHC29410%%12
• Resource Relation: Other Information: TH: Thesis (M.S.); PBD: 1993
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
PENTANOLS
DISSOLUTION
MICELLAR SYSTEMS
SOLVENT PROPERTIES
THERMODYNAMIC PROPERTIES
CONCENTRATION RATIO
EXPERIMENTAL DATA
100300
PROPERTIES AND COMPOSITION