Dynamic Contact Angle

Exponential Business and Technologies Company

Bridging You and Nano

Dynamic contact angles typically mean advancing and receding contact angles or contact angle changes along time. The dynamic contact angles can be measured conveniently using camera-based contact angle meters. An alternative to the optical image based method is the Wilhelmy balance method available on a surface tensiometer. Instead of using high-speed cameras, a surface tensiometer relies on a high-resolution electronic balance to measure the force acting on the sample over time when the sample is being introduced into or pulling away from a liquid. Given the perimeter of the sample, the contact angle as a function of time and advancing or receding angle can be determined.

Typical Experimental Results:

Dynamic Contact Angles of a Polypropylene plate

Advancing Angle(deg)	Receding Angle(deg)
90.54	64.32

dynamic contact angle2

Dynamic contact angle of water on a polypropylene plate.

Applications:

Aqueous Solutions	Contact Angle Hysteresis	Dip Coatings
High Viscous Liquids	Metal Sheets	Oil Mixtures
Papers	Plates	PTFE Sheets
Rods	Temperature Control	Tubing

For more information please read our application notes.

Instruments: Kyowa DyneMaster DY-700 Surface Tensiometer

dy700 Key Specifications:

Measurement Range	0-100 m N/m
Contact Angle Range	0 – 180°
Display Resolution	0.01° m N/m
Repeatability	0.02 m N/m
Sample Volume	20 mL – Petri Dish 50 mL - Vessel
Stage Movement Range	50 mm
Stage Movement Speed	0.002 – 50 mm/s