Kovalchuk N M, Vollhardt D
Institute of Biocolloid Chemistry, Kiev, Ukraine.
J Phys Chem B. 2006 May 25;110(20):9774-8. doi: 10.1021/jp061816a.
Instability due to surfactant redistribution in a liquid membrane system consisting of two solutions, namely source and acceptor, separated by a layer of immiscible liquid is studied theoretically and experimentally. The transfer of a surfactant from a source phase to an acceptor phase is often accompanied by spontaneous nonlinear oscillations of electrical potential and/or interfacial tension. The oscillations can be generated at each of the membrane interfaces. Here a mechanism of oscillation, which develops at the membrane/acceptor phase interface, is proposed on the basis of direct numerical simulation of the system evolution. Performed experimental studies confirm the theoretical results.
对由两种溶液（即源相和受体相）组成的液膜系统中由于表面活性剂重新分布导致的不稳定性进行了理论和实验研究，该系统由一层不混溶液体分隔。表面活性剂从源相转移到受体相时，往往伴随着电势和/或界面张力的自发非线性振荡。这些振荡可在每个膜界面处产生。在此，基于系统演化的直接数值模拟，提出了一种在膜/受体相界面处产生振荡的机制。所进行的实验研究证实了理论结果。
