• Spraygun used for a car

    Spraygun used for a car

Dynamic properties of surfactants

Kinetic investigations into the effectiveness of surfactants

Surfactants reduce the surface tension of solutions in thermodynamic equilibrium to a particular level depending on the concentration which can be measured using static tensiometric methods. In dynamic processes such as spraying or printing, the surface tension in equilibrium is not the determining factor – this is often only achieved after several seconds or, in the extreme case, after hours. The decisive factor is the value which is achieved in the time from the formation of the surface to the instant of use – for example, when a drop of ink makes contact with the paper.

Download our application report AR268.

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