Physicochemical control of foam properties
| Autor: | Nadya Politova-Brinkova, Nikolai D. Denkov, Slavka Tcholakova |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Ostwald ripening
Physics::General Physics Chemical substance Materials science Polymers and Plastics Bubble Foaming agent 02 engineering and technology 010402 general chemistry 01 natural sciences Physics::Fluid Dynamics symbols.namesake Colloid and Surface Chemistry Adsorption Rheology Physical and Theoretical Chemistry Physics::Computational Physics chemistry.chemical_classification Surfaces and Interfaces Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Condensed Matter::Soft Condensed Matter Chemical engineering chemistry symbols 0210 nano-technology Science technology and society |
| Zdroj: | Current Opinion in Colloid & Interface Science. 50:101376 |
| ISSN: | 1359-0294 |
| DOI: | 10.1016/j.cocis.2020.08.001 |
| Popis: | This article summarizes our recent understanding on how various essential foam properties could be controlled (viz. modified in a desired way) using appropriate surfactants, polymers, particles and their mixtures as foaming agents. In particular, we consider the effects of these agents on the foaminess of solutions and suspensions (foam volume and bubble size after foaming); foam stability to liquid drainage, bubble coalescence and bubble Ostwald ripening; foam rheological properties and bubble size in sheared foams. We discuss multiple, often non-trivial links between these foam properties and, on this basis, we summarize the mechanisms that allow one to use appropriate foaming agents for controlling these properties. The specific roles of the surface adsorption layers and of the bulk properties of the foaming solutions are clearly separated. Multiple examples are given, and some open questions are discussed. Where appropriate, similarities with the emulsions are noticed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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