Matsubara H, Umezaki T, Funatsu T, Tanaka H, Ikeda N, Aratono M
Graduate School of Advanced Science and Engineering, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526, Japan; Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
Adv Colloid Interface Sci. 2020 Aug;282:102206. doi: 10.1016/j.cis.2020.102206. Epub 2020 Jul 12.
Mixed adsorbed film of cationic surfactant and linear alkane at the air-water interface shows two-dimensional phase transition from surface liquid to surface frozen states upon cooling. This surface phase transition is accompanying with the compression of electrical double layer due to the enhancement of counterion adsorption onto the adsorbed surfactant cation and therefore induces the thinning of the foam film at fixed disjoining pressures. However, by increasing the disjoining pressure, surfactant ions desorb from the surface to reduce the electric repulsion between the adsorbed films on the both sides of the foam film. As a result, the foam film stabilized by the surfactant-alkane mixed adsorbed films showed unique thickening transition on the disjoining pressure isotherm due to the back reaction to the surface liquid films. In this review, we will summarize all these features based on the previously published papers and newly obtained results.
阳离子表面活性剂与线性烷烃在气-水界面形成的混合吸附膜，在冷却时会发生从表面液态到表面冻结态的二维相变。这种表面相变伴随着由于反离子吸附到吸附的表面活性剂阳离子上而导致的双电层压缩，因此在固定的分离压力下会引起泡沫膜变薄。然而，通过增加分离压力，表面活性剂离子会从表面解吸，以减少泡沫膜两侧吸附膜之间的电排斥力。结果，由表面活性剂-烷烃混合吸附膜稳定的泡沫膜在分离压力等温线上表现出独特的增厚转变，这是由于对表面液膜的反向反应。在这篇综述中，我们将基于先前发表的论文和新获得的结果总结所有这些特征。
