Volume 63, 1967

Partial molar volumes of surface-active agents in aqueous solution

Abstract

The partial molar volumes V2 of some ionic and non-ionic surface-active agents have been determined above and below the critical micelle concentrations. The change ΔV2 in partial molar volumes on micelle formation is determined by molecular structure. Thus, additional methylene groups in the alkyl chain remote from the hydrophilic group give an increase in ΔV2, while additional methylene groups in close proximity to a hydrophilic centre give a small decrease in ΔV2. These results indicate that in the process of micelle formation the hydration of the methylene groups adjacent to the hydrophilic group is retained.

Article information

Article type
Paper

Trans. Faraday Soc., 1967,63, 768-772

Partial molar volumes of surface-active agents in aqueous solution

J. M. Corkill, J. F. Goodman and T. Walker, Trans. Faraday Soc., 1967, 63, 768 DOI: 10.1039/TF9676300768

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