Optimizing the Surface-Active Performances of Cat-Anionic Mixtures: A Short Review
- 1 Department of Chemistry, Sapienza University, P.le A. Moro 5, I-00185 Rome, Italy
Abstract
Mixtures of oppositely charged surfactants are used for applications requiring extensive foaming. This holds true for cat-anionic systems. Their bulk behavior is known in detail, when surface, or interface, properties do not attract the same attention. The thermodynamic features of such systems and the strategies interrelating the behavior in bulk to that at surfaces are outlined. Such systems are strongly not ideal. So, the interaction parameters for bulk and surface phases, βsurf and βmic, respectively, are introduced. Efforts to connect the two quantities were made. The definition of interaction parameters comes from the regular solution theory. Originally applied to micelle formation, it was later extended to the saturation of fluid surfaces. In this context, the interaction parameters were applied to the surface properties of selected cat-anionic systems and their links with bulk ones discussed.
DOI: https://doi.org/10.3844/ajeassp.2023.118.125
Copyright: © 2023 Camillo A. La Mesa. This is an open access article distributed under the terms of the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Keywords
- Surfactants
- Cat-Anionic Mixtures
- Bulk Properties
- Surface Properties
- Non-Ideality of Interaction