While contact angle (CA) goniometry involving placing a drop of liquid on a surface and measuring the resulting angle has been around for many years, we have only recently developed a system to account for the underlying surface’s micro-scale roughness.Read More
Surface tension of inkjet inks and the wettability of the printing substrate are important factors influencing the final printing quality and process reliability. Surface tension and interfacial interactions can be explored with various tensiometry technologies: Equilibrium and dynamic surface tension measurements can be utilized in ink formulation and development.Read More
Various types of artificial materials are being utilized as implants in all fields of medicine. The surface properties of the implant determine its interactions with the surrounding host tissue. Physicochemical properties of the surface, like wettability and surface roughness, are of prime importance for the optimization of adhesion, spreading and proliferation of cells.
Did you know that surface roughness affects paper and board wettability? Due to their fiber-like structure, paper and board surfaces almost always have a surface with roughness. This roughness inherently affects the wettability as it amplifies the wetting effect of the surface chemistry. For hydrophilic surfaces, added surface roughness makes the surface further hydrophilic whereas with hydrophobic surfaces the effect is reversed.Read More
The parameters that are being measured in quality control of paper and board may differ for several reasons; what applications the paper is made for, available instrumentation, traditions etc. If you haven’t thought about measuring wettability and adhesion properties of your paper, here are 6 reasons to start doing so.