What is determined with this method?

• determination of the contact angle at an interface between a liquid deposited as a drop on a solid surface and the solid surface using drop shape analysis
• contact angle is a measure of the wettability of a solid surface by a liquid

Measuring range

• contact angle: 0° - 180° (± 0,1°)
• drop dosing from 1 µL possible
• frame rate: up to 52 frames per second
• 4 dosing modules, software-controlled

What is evaluated with this method?

• evaluation of the wettability of a solid by a liquid
• evaluation of the intensity of interactions or the phase contact of a solid surface and a liquid
• based on this, estimates can be made regarding: hydrophobic/hydrophilic properties, barrier properties, absorption capacity and processability (e.g. gluing, printing, coating, painting, cleaning)

Examples of application of the method by material

• assessment of the wettability of papers, coatings, foils with e.g. printing inks, adhesives, paints
• evaluation of the bondability with water-based dispersion adhesives

What insights do customers gain about your products/samples with this method?

• wettability of samples
• printability with (special) inks
• water absorption capacity of samples

In which company or process area are these methods applied?

• company: product development, research

Which problems can this method solve / recognise at the customer?

• checking desired/specifically adjusted surface properties of products