Surface Science Blog

How surface roughness and wettability affects biocompatibility

Posted by Anna Oom on November 24, 2015

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.



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Topics: Biomaterials, Wettability, Surface Roughness, Protein Adsorption, Adhesion, Surface Free Energy

How to study adhesion to wood-plastic composites

Posted by Gunilla Rydén on September 25, 2015


Wood-plastic composites are relatively new materials as they started to emerge at the beginning of the 90’s. The most widespread use of WCPs is in outdoor decking but it is also used in railings and siding as well as park benches and indoor furniture. Wood-plastic composites (WPCs) are composed of three main ingredients: recycled thermoplastics (such as polyethylene, polypropylene and polyvinyl chloride), wood filler and additives.

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Topics: Surface Roughness, Adhesion, Contact Angle

The Influence of Surface Roughness on Wettability in Paper and Board

Posted by Anna Oom on June 23, 2015


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. 

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Topics: Wettability, Surface Roughness, Paper and Board

6 Reasons to Measure Wettability in Paper and Board Quality Control

Posted by Anna Oom on June 11, 2015


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.
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Topics: Quality Control, Wettability, Surface Roughness, Paper and Board, Contact Angle