Apparent Dynamic Surface Tension of Polymer Solutions

Prediction of Surface Tension in Single and Mixed Electrolyte Solutions

Dynamic Surface Enrichment in Drying Thin-Film Binary Polymer Solutions

Solution-cast, thin-film polymer composites find a wide range of applications, such as in the photoactive layer of organic solar cells. The performance of this layer crucially relies on its phase-separated morphology. Efficient charge-carrier extraction requires each of the components to preferentially wet one of the two electrodes. It is often presumed that the experimentally observed surface ...

The Surface Tension of Physiological Solutions

1. Data are given to show that surface tension values obtained by the ring method cannot be considered reliable when absolute values are desired. 2. Data are given to show that, in the case of solutions of semicolloids, surface tension values obtained for a definite period of time following the formation of a new interface cannot always be consistently reproduced by the ring method. 3. It is sh...

The Dynamic Surface Tension of Water

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 (∼90 mN m-1) than...

Effect of polymer–polymer interactions on the surface tension of colloid–polymer mixtures

The density profile and surface tension for the interface of phase-separated colloid–polymer mixtures have been studied in the framework of the square gradient approximation for both ideal and interacting polymers in good solvent. The calculations show that in the presence of polymer– polymer excluded volume interactions the interfaces have lower widths and surface tensions compared to the case...