Abstract
Critical micelle concentrations (CMC) of two nonionic surfactants, Triton X-100 and Brij 35, in aqueous solutions at different temperatures, 35, 40, 45°C, were determined by spectrophotometry methods. Effects of different concentrations of additives, polyethylene glycol 400 and acetamide, on the values of the CMC were also determined. Hence the thermodynamic quantities ΔGm, ΔHm and ΔSm for the micellization process were computed both in the presence and absence of additives. It is seen that though free energy of micellization is negative for all systems, the entropy of micellization is positive and this is explained on the basis of breaking of water structure as well as solubilization of cosolvents and formation of mixed micelle. The enthalpy — entropy compensation effect was observed in almost all systems. The slope of the ΔH — ΔS plot seems to follow Lumry’s law suggesting that the same overall phenomenon occurs in micelle formation in the aqueous solution both in the presence and absence of additives.
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References
J. H. Fendler, “Membrane Mimetic Chemistry”, John Wiley, New York, 1982.
K. Kalyanasundaram, F. Grieser and J. K. Thomas, Chem. Phys. Lett. 51, 501 (1977).
D. W. Armstrong, R. Segnin, C. J. Meweal, R. D. Macfarlane and J. H. Fenton, J. Amer. Chem. Soc. 100, 4605 (1978).
R. R. Hautala, R. B. King and C. Kutal, Editors, “Solar Energy, Chemical Conversion and Storage”, The Humana Press, Clifton, N.J., 1979.
A. Malliaris, J. Long and R. Zana, J. Phys. Chem. 90, 655 (1986) and references therein.
C. Chachaty, J. P. Quaegebeur, J. P. Caniparoli and J. P. Korb., J. Phys. Chem. 90, 1115 (1986).
P. Bhattacharya and I. N. Basumallick, Abstract of 21st Annual Convention of Chemists, Jadavpur University, Calcutta, India, October 1984.
A. Malovikova, K. Hayakawa and J. C. T. Kwak, J. Phys. Chem. 88, 1930 (1984) and reference therein.
E. M. Woolley and T. E. Burchfield, Fluid Phase Equilibria 20, 207 (1985) and references therein.
H. Kunieda and K. Shinoda, J. Phys. Chem. 80, 2468 (1976) and references therein.
B. Cabane and T. Zemb., Nature, 314, 385 (1985).
P. L. Luisi and B. E. Straub, Editors, “Reverse Micelles” Plenum Press. New York, 1984.
F. M. Menger in “Surfactants in Solution”, K. L. Mittal and B. Lindman, Editors, Vol. 1, p. 347, Plenum Press, New York, 1984.
A. K. Rakshit and S. Narayan, Ind. J. Chem. 25A, 951 (1986) and references therein.
L. G. Ionescu, L. S. Romanesco and F. Nome, in “Surfactants in Solution”, K. L. Mittal and B. Lindman, Editors, Vol. 2, p.789, Plenum Press, New York, 1984 and reference therein.
P. H. Kothwala, T. N. Nagar and P. Bahadur, Colloids Surfaces 14, 59 (1985).
A. Ray and G. Nemethy, J. Phys. Chem. 75, 809 (1971).
A. B. Mandai, S. Ray, A. M. Biswas and S. P. Moulik, J. Phys. Chem. 84, 856 (1980).
A. Gotto, M. Takemoto and F. Endo, Bull. Cnem. Soc. Jpn. 58, 247 (1985).
H. G. Elias, “Macromolecules-2”, Second edition, Plenum Press, New York, 1984.
G. B. Butler and K. D. Berlin, “Fundamentals of Organic Chemistry”, Ronald, New York, 1972.
S. Ross and J. P. Olivier, J. Phys. Chem. 63, 1671 (1959).
M. Hato, K. Shinoda and T. Miyagawa, Bull. Chem. Soc. Jpn. 49, 1257 (1976).
I. J. Lin and J. A. Metzer, J. Phys. Chem. 75, 3000 (1971).
R. D. Vold and M. J. Vold, “Colloid and Interface Chemistry”, Addison-Wesley Publishing Co., Reading, Massachusetts, 1983.
J. Marignau, P. Basserau and P. Delord, J. Phys. Chem. 90, 645 (1986).
H. S. Frank and M. N. Evans, J. Cnem. Phys. 13, 507 (1945).
P. Lumry and S. Rajender, Biopolymers 9, 1125 (1970).
H. N. Singh, S. M. Saleem and R. P. Singh, J. Phys. Chem. 81, 2191 (1980).
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© 1989 Plenum Press, New York
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Sharma, B.G., Rakshit, A.K. (1989). Studies on Thermodynamics of Micellization of Nonionic Surfactants Triton X-100 and Brij 35 in Aqueous Solution: Effect of Polyethylene Glycol 400 and Acetamide. In: Mittal, K.L. (eds) Surfactants in Solution. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7984-7_20
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DOI: https://doi.org/10.1007/978-1-4615-7984-7_20
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