Fluoro- Vs hydrocarbon surfactants: Why do they differ in wetting performance?

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Abstract

Fluorosurfactants are the most effective compounds to lower the surface tension of aqueous solutions, but their wetting properties as related to low energy hydrocarbon solids are inferior to hydrocarbon trisiloxane surfactants, although the latter demonstrate higher surface tension in aqueous solutions. To explain this inconsistency available data on the adsorption of fluorosurfactants on liquid/vapour, solid/liquid and solid/vapour interfaces are discussed in comparison to those of hydrocarbon surfactants. The low free energy of adsorption of fluorosurfactants on hydrocarbon solid/water interface should be of a substantial importance for their wetting properties. © 2014 Elsevier B.V. All rights reserved.

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Kovalchuk, N. M., Trybala, A., Starov, V., Matar, O., & Ivanova, N. (2014). Fluoro- Vs hydrocarbon surfactants: Why do they differ in wetting performance? Advances in Colloid and Interface Science. Elsevier. https://doi.org/10.1016/j.cis.2014.04.003

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