Desorption behavior of surfactant mixtures at the alumina-water interface
Journal Article
·
· Journal of Colloid and Interface Science
- Columbia Univ., New York, NY (United States). Langmuir Center for Colloids and Interfaces
The desorption behavior of cationic-nonionic surfactant mixtures, tetradecyltrimethylammonium chloride (TTAC) and pentadecylethoxylated nonyl phenol (NP-15), at the alumina-water interface was studied. It has been found that while nonionic NP-15 itself does not adsorbed at alumina-water interface, it will do so with cationic TTAC preadsorbed at the interface. During the desorption process, however, the presence of NP-15 in the system was discovered to cause desorption of TTAC. This is attributed to changes in equilibrium among surfactant monomers, mixed micelles, hemimicelles, and solloids upon the addition of NP-15: the cationic TTAC species at the interface is solubilized in NP-15 rich micelles in the bulk and perturb the equilibrium. This in turn is proposed to cause the desorption of NP-15 significant. The desorption behavior in the mixed surfactant system depends on the mixing ratio of surfactants in the mixtures. In nonionic NP-15 rich mixtures, negative hysteresis is observed for the desorption of both TTAC and NP-15. In cationic TTAC rich mixtures, the effect of NP-15 on the desorption of TTAC is limited and the desorption of TTAC is similar to that in single TTAC system; in this case some positive hysteresis is observed for both TTAC and NP-15.
- Sponsoring Organization:
- National Science Foundation, Washington, DC (United States); USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-92BC14884
- OSTI ID:
- 533090
- Journal Information:
- Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 1 Vol. 192; ISSN 0021-9797; ISSN JCISA5
- Country of Publication:
- United States
- Language:
- English
Similar Records
Surfactant loss control in chemical flooding: Spectroscopic and calorimetric study of adsorption and precipitation on reservoir minerals. Quarterly technical progress report, July 1, 1994--October 31, 1994
Adsorption behavior of cationic and nonionic surfactant mixtures at the alumina-water interface
Surfactant loss control in chemical flooding: Spectroscopic and calorimetric study of adsorption and precipitation on reservoir minerals. Quarterly technical progress report. October 1, 1994--December 31, 1994
Technical Report
·
Mon Oct 31 23:00:00 EST 1994
·
OSTI ID:10113508
Adsorption behavior of cationic and nonionic surfactant mixtures at the alumina-water interface
Journal Article
·
Sun Jan 14 23:00:00 EST 1996
· Journal of Colloid and Interface Science
·
OSTI ID:178328
Surfactant loss control in chemical flooding: Spectroscopic and calorimetric study of adsorption and precipitation on reservoir minerals. Quarterly technical progress report. October 1, 1994--December 31, 1994
Technical Report
·
Tue Feb 28 23:00:00 EST 1995
·
OSTI ID:93948