Abstract
We have investigated the influence of dilute tertiary amyl alcohol (t-AmOH) on micellar size and charge by dynamic light scattering using two related surfactant/salt systems: CTABr (C16H33N(CH3)3-Br) + NaBr, and CTAC1 (C16H33)N(CH3)3C1) + NaCl. These were chosen because of their contrasting sensitivity to added salt with respect to micellar growth. For CTABr there is substantial growth at 25°C for [NaBr] > 0.05M, whereas for CTAC1 there is negligible growth below [NaCl] ∼ 1M. We measured the micellar diffusion coefficient D as a function of [surfactant] and [salt] at 25°C over the range 0.25% ≤ [t-AmOH] ≤ 7% (w/w) , approaching the solubility limit of t-AmOH in water, ca. 11%. We focused our attention on relatively low salt concentrations, where interlicellar interactions are predominantly repulsive and micellar growth is either small-to-moderate (CTABr) or negligible (CTAC1). For the CTACl-related ternary system we applied linear interaction theory (with a DLVO-type pair potential) to estimate the hydrodynamic radius Rh and fractional ionization a, from fits to D vs [surfactant] for various [salt]. Over the range of t-AmOH investigated, in general Rh decreases and a increases somewhat with increasing [t-AmOH], consistent with previous findings in the literature.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
V.K. Bansal and D.O. Shah in “Microemulsions: Theory and Practice” L.M. Prince, Editor, p. 149, Academic Press, New York, 1974.
J.H. Schulman, W. Stoeckenius and L.M. Prince, J. Phys. Chem. 63, 1677 (1959).
R.A. Mackay, Adv. Colloid Interface Sci. 15, 131 (1981).
A.M. Bellocq, J. Baias, P. Bothorel, B. Clin, G. Fourche, P. Lalanne, B. Lemaire, B. Lemanceau and D. Roux, Adv. Colloid Interface Sci 20, 167 (1984).
F. de Buzzaccarini, “Structure and Reactivity in Microemulsions” PhD thesis, University of California at Santa Barbara, Dept. of Chemistry, 1981.
R. Zana, J. Lang and P. Lianos in “Surfactants in Solution” K.L. Mittal and B. Lindman, Editors, Vol. 3, p. 1627, Plenum, New York, 1984.
R. Zana, S. Yiv, C. Strazielle and P. Lianos, J. Colloid Interface Sci. 80, 208 (1981).
D. Hall, P. Jobling, J.E. Rassing and E. Wyn-Jones, J. Chem. Soc. Faraday Trans. II 73, 1582 (1977).
A.M. Bellocq, J. Baias, B. Clin, P. Lalanne and B. Lemanceau, J. Colloid Interface Sci. 70, 524 (1979).
R.B. Dorshow, J. Briggs, C.A. Bunton and D.F. Nicoli, J. Phys. Chem. 86, 2388 (1982).
R.B. Dorshow, C.A. Bunton and D.F. Nicoli, J. Phys. Chem. 87, 1409 (1983).
D.F. Nicoli, R.B. Dorshow and C.A. Bunton, in “Surfactants in Solution” K.L. Mittal and B. Lindman, Editors, Vol. 1, p. 455, Plenum, New York, 1984.
R.B. Dorshow, “A Study of Micelles and Microemulsions by Laser Light Scattering” PhD thesis, University of California at Santa Barbara, Dept. of Physics, 1983.
M. Corti and V. Degiorgio, J. Phys. Chem. 85, 711 (1981).
B. Chu, “Laser Light Scattering” Academic Press, New York, 1974.
B.J. Berne and R. Pecora, “Dynamic Light Scattering” Wiley, New York, 1976.
T.L. Hill, “An Introduction to Statistical Thermodynamics” Addison- Wesley, Reading, MA, 1980.
B.U. Felderhof, J. Phys. A: Math. Gen. 11, 929 (1978).
G.K. Batchelor, J. Fluid Mech. 74 ,1 (1976).
E.J.W. Verwey and J.Th.G. Overbeek, “Theory of the Stability of Lyophobic Colloids” Elsevier, New York, 1948.
P.C. Hiemenz, “Principles of Colloid and Surface Chemistry” Marcel Dekker, New York, 1977.
D.F. Nicoli, V. Athanassakis, J.R. Moffat, C.A. Bunton, R.B. Dorshow and G. Savelli, these Proceedings.
V. Athanassakis, J.R. Moffat, C.A. Bunton, R.B. Dorshow, G. Savelli and D.F. Nicoli, Chem. Phys. Lett. L 5, 467 (1985).
C.A. Bunton, L.S. Romsted and C.J. Thamavit, J. Am. Chem. Soc. 102, 3900 (1980).
V. Athanassakis, “A Study of Micelles and Microemulsions by Reaction Kinetics and Light Scattering” M.S. thesis, University of California at Santa Barbara, Dept. of Chemistry, 1984.
N.A. Mazer, M.C. Carey and G.B. Benedek, in “Micellization, Solubilization and Microemulsions” K.L. Mittal, Editor, Vol. 1, p. 359, Plenum, New York, 1977.
P.J. Missel, N.A. Mazer, G.B. Benedek and C.Y. Young, J. Phys. Chem. 84, 1044 (1980).
H. Hoffmann, G. Platz, H. Rehage and W. Schorr, Ber. Bunsenges. Phys. Chem. 85, 877 (1981); also, private communication.
J. Geltins, D. Hall, P.L. Jobling, J.E. Rassing and E. Wyn-Jones, J. Chem. Soc. Faraday Trans. II 74, 1957 (1978).
V. Athanassakis, C.A. Bunton and F. de Buzzaccarini, J. Phys. Chem. 86, 5002 (1982).
J.W. Larsen and L.B. Tepley, J. Colloid Interface Sci. 49, 113 (1974).
R. Zana, J. Colloid Interface Sci. 78 ,330 (1980).
P. Lianos and R. Zana, J. Colloid Interface Sci. 84, 100 (1981).
C.A. Bunton and F. de Buzzaccarini, J. Phys. Chem. 86, 5010 (1982).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1986 Plenum Press, New York
About this chapter
Cite this chapter
Athanassakis, V., McKenzie, D.C., Bunton, C.A., Nicoli, D.F. (1986). Perturbation of Micellar Size and Charge by Addition of t-Amyl Alcohol. In: Mittal, K.L., Bothorel, P. (eds) Surfactants in Solution. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1831-6_20
Download citation
DOI: https://doi.org/10.1007/978-1-4613-1831-6_20
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4612-9023-0
Online ISBN: 978-1-4613-1831-6
eBook Packages: Springer Book Archive