Rio Emmanuelle, Biance Anne-Laure
Laboratoire de Physique des Solides, Université Paris Sud-CNRS, UMR8502, Bat 510, 91405 Orsay cedex (France).
Chemphyschem. 2014 Dec 1;15(17):3692-707. doi: 10.1002/cphc.201402195. Epub 2014 Sep 26.
Recent advances in the coalescence in liquid foams are reviewed, with a special focus on the multiscale structure of foams. Studies concerning the stability of isolated foam films, on the one hand, and the coalescence process in macroscopic foams, on the other hand, are not always in good agreement. This discrepancy reveals that two routes can induce coalescence in a foam. The first route is thermodynamic and shows that coalescence is governed by a stochastic rupture of foam films. The second route relies on a mechanically induced rupture of the films, due to the spontaneous evolution of foams. From a literature review, the evaluation of the different timescales involved in these mechanisms allows defining the limiting parameters of foam coalescence.
本文综述了液体泡沫聚并方面的最新进展，特别关注泡沫的多尺度结构。一方面，关于孤立泡沫膜稳定性的研究，与另一方面宏观泡沫中的聚并过程的研究，并不总是完全一致。这种差异表明，有两种途径可导致泡沫聚并。第一种途径是热力学途径，表明聚并由泡沫膜的随机破裂控制。第二种途径依赖于由于泡沫的自发演化而导致的膜的机械诱导破裂。通过文献综述，对这些机制中涉及的不同时间尺度进行评估，可以确定泡沫聚并的极限参数。
