Langevin Dominique
Laboratoire de Physique des Solides, UMR CNRS 8502, Université Paris Saclay, 91405 Orsay, France.
Langmuir. 2023 Mar 21;39(11):3821-3828. doi: 10.1021/acs.langmuir.2c03423. Epub 2023 Mar 7.
In this perspective paper, we highlight the numerous open problems in the topic of stability of emulsions and foams, focusing on the simplest case of dispersions stabilized by surfactants. There are three main destabilization processes, gravity induced evolution, Ostwald ripening, and drops or bubble coalescence, which are analyzed separately. The discussion is restricted to the case of Newtonian fluids, deprived of microstructure, except for the presence of micelles. Thanks to continuing efforts and recent breakthroughs, we show that the understanding of emulsion and foam stability is progressing. Many problems are still open, however, and much work remains to be done along the lines outlined in the paper.
在这篇观点论文中，我们着重探讨乳液和泡沫稳定性这一主题中众多尚未解决的问题，聚焦于由表面活性剂稳定的最简单分散体系情形。存在三种主要的失稳过程，即重力诱导演化、奥斯特瓦尔德熟化以及液滴或气泡聚并，我们将分别对其进行分析。讨论仅限于牛顿流体的情况，除了胶束的存在外，不考虑微观结构。由于持续的努力和近期的突破，我们表明对乳液和泡沫稳定性的理解正在取得进展。然而，许多问题仍然悬而未决，并且沿着本文所概述的方向仍有大量工作有待完成。
