Abstract
The effect of methanol, ethanol, and 1-propanol on the critical micelle concentration (CMC) of several surfactant aqueous solutions has been studied in the 10–40°C temperature range by surface tension and conductivity measurements. Experimental parameters such as the standard free energy, enthalpy and entropy of micellization weere also determined. — The results show that on increasing alcohol concentration the CMC first reaches a minimum at an intermediate cosolvent mole fraction x 2 = x*2 typical for each alcohol, and then increases with increasing x 2. The value of x*2 is close to that at which structural changes in the mixtures occur as inreferred from compressibility, UV, IR absorption spectra, and neutron and x-ray scattering measurements. — The present experiments support the assumption that the dominant mechanism by which 1-alcohols affect the micellization process is through their effect on the structure of solvent. It is suggested that the same conclusion could be valid for a number of other systems of biological and chemical interest.
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© 1992 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Onori, G., Santucci, A. (1992). Effect of 1-alcohols on micelle formation and hydrophobic interactions. In: Helm, C., Lösche, M., Möhwald, H. (eds) Trends in Colloid and Interface Science VI. Progress in Colloid & Polymer Science, vol 89. Steinkopff. https://doi.org/10.1007/BFb0116334
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DOI: https://doi.org/10.1007/BFb0116334
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