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Thinning and thickening transitions of foam film induced by 2D liquid-solid phase transitions in surfactant-alkane mixed adsorbed films.
Advances in Colloid and Interface Science ( IF 15.9 ) Pub Date : 2020-07-12 , DOI: 10.1016/j.cis.2020.102206
H Matsubara 1 , T Umezaki 2 , T Funatsu 2 , H Tanaka 2 , N Ikeda 3 , M Aratono 2
Affiliation  

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.



中文翻译:

表面活性剂-烷烃混合吸附膜中二维液固相转变引起的泡沫膜变薄和增稠转变。

阳离子表面活性剂和直链烷烃在空气-水界面的混合吸附膜在冷却时显示出从表面液体到表面冻结状态的二维相变。这种表面相变伴随着双电层的压缩,这是由于抗衡离子在吸附的表面活性剂阳离子上的吸附增强,因此在固定的分离压力下导致泡沫膜变薄。然而,通过增加分离压力,表面活性剂离子从表面解吸,以减少泡沫膜两侧的被吸附膜之间的电排斥。结果,由表面活性剂-烷烃混合的吸附膜稳定的泡沫膜由于对表面液膜的反作用而在分离的等温线上显示出独特的增稠转变。在这篇评论中

更新日期:2020-07-21
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