The Dynamic Surface Tension of Water

被引：112

作者：

Hauner, Ines M. ^{[1
,2
]}

Deblais, Antoine ^{[3
]}

Beattie, James K. ^{[4
]}

Kellay, Hamid ^{[3
]}

Bonn, Daniel ^{[1
]}

机构：

[1] Univ Amsterdam, van der Waals Zeeman Inst, NL-1098 XH Amsterdam, Netherlands

[2] PSL Res Univ, Chim ParisTech, CNRS, Inst Rech Chim Paris, F-75005 Paris, France

[3] Univ Bordeaux, Lab Ondes & Mat Aquitaine, UMR CNRS 5798, 351 Cours Liberat, F-33405 Talence, France

[4] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2017年 / 8卷 / 07期

关键词：

PINCH-OFF; HYDROXIDE; RELAXATION; INTERFACE; BREAKUP;

D O I：

10.1021/acs.jpclett.7b00267

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The surface tension of water is an important parameter for many biological or industrial processes, and roughly a factor of 3 higher than that of nonpolar liquids such as oils, which is usually attributed to hydrogen bonding and dipolar interactions. Here we show by studying the formation of water drops that the surface tension of a freshly created water surface is even higher (similar to 90 mN m(-1)) than under equilibrium conditions (similar to 72 mN m(-1)) with a relaxation process occurring on a long time scale (similar to 1 ms). Dynamic adsorption effects of protons or hydroxides may be at the origin of this dynamic surface tension. However, changing the pH does not significantly change the dynamic surface tension. It also seems unlikely that hydrogen bonding or dipole orientation effects play any role at the relatively long time scale probed in the experiments.

引用

页码：1599 / 1603

页数：5

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