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Bulgarian Journal of Physics
Print: 1310-0157 Online: 1314-2666
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RECOGNIZED BY THE EUROPEAN PHYSICAL SOCIETY 
Bulg. J. Phys. vol.17 no.5 (1990), pp. 444-453
Critical Micellar Concentration of Surfactant Solutions When Additives with Different Solubilities Are Present in the Solvent
S. Panayotova1, A. Derzhanski2, I. Bivas2
1Higher Institute of Food and Flavour Industries, Department of Physics, 26 Lenin blvd, Plovdiv 4000, Bulgaria
2Institute of Solid State Physics, Bulgarian Academy of Sciences, Laboratory of Liquid Crystals and Molecular Electronics, 72 Lenin blvd, Sofia 1784, Bulgaria
go back1Higher Institute of Food and Flavour Industries, Department of Physics, 26 Lenin blvd, Plovdiv 4000, Bulgaria
2Institute of Solid State Physics, Bulgarian Academy of Sciences, Laboratory of Liquid Crystals and Molecular Electronics, 72 Lenin blvd, Sofia 1784, Bulgaria
Abstract. The aim of the present work is the theoretical investigation of the influence of dissolved additives with small enough and finite conrentrations upon the critical micellar concentrations (CMC) of surfactants. According to the theory developed by us, for each surfactant the addition of an additive leads to a decrease of CMC as compared with CMC without an additive. A maximal value of the concentration of the additive upon which the CMC could not be defined any more has been shown to exist.