The core of RadiSurf is a chemical structure on surfaces, called polymer brushes. Polymer brushes are polymer chains tethered to a surface to create a polymeric nanolayer – like a meadow with high grass or a velcro-like structure. The difference is, that our polymer brushes are only 30-100 nanometer long. That is 1.000 times smaller than the width of a strand of human hair.

Polymer brushes are polymeric nanocoatings on surfaces, where polymers are chemically tethered to the surface.
Polymer Brushes possess an untapped potential for industrial applications, if the production can be scaled up.

Reported in the literature as early as the 1950 ’ polymer brushes have attracted wide interest both in the scientific community and in a range of industries. With the emergence and focus on nanotechnology over the last 20 years, synthesis and applications of polymer brushes has been an area of intensive research Hailed as a top achievement in the fields of polymer and nanoscience

However, despite countless efforts, no scalable, industrially relevant or commercially viable method for synthesizing polymer brushes have been demonstrated Today, polymer brushes are still grown arduously in laboratories under strict environmental control This is now all about to change. Read more about RadiSurf unique technology for growth of polymer brushes.

Polymer Brushes changes the behaviour of surfaces

Polymer Brushes are like ultrathin plastic coatings with a unique chemical and physical structure allowing them to interact with the surroundings. By controlling the chemical and physical structure of the polymer brushes, we can change the properties of surfaces. By growing polymer brushes of polystyrene on a glass surface, we can make the glass behave as if was made entirely of polystyrene. That is reflected directly in the way it repels water, whereas the normal glass will attract the water.

A blank glass slide displays a low water contact angle and high wetting, whereas a RadiSurf PS adhesion layer makes the surface hydrophobic to resemble PS.

As the glass surface now behaves as polystyrene, it is not only able to repel water, it is also able to bond directly to polystyrene in welding and over-molding processes. Imagine how this can open new opportunities when any surface – metal, glass etc. – can be made to behave as any kind of plastic.

Strong Adhesion with Polymer Brushes

As we can use our core technology to grow polymer brushes of distinctly different chemistry and structure, we can adapt them to various plastic materials as what we call nanoprimers. The polymer brushes are grown through a two-step process using our nanoprimer chemical kits. The surfaces with the polymer brushes are stable, dry and can be stored for months before assembly.

The unique properties of the polymer brushes is to a high degree due the growth from the surface resulting in a high density structure. The final assembly with the polymer part is done using traditional industrial methods, such as plastic over molding or welding techniques, or in the case of coatings and glues just by conventional direct application. The interface of the polymer material must be dissolved or put in a molten state during assembly to achieve chemical entanglement Chemical entanglement can be visualized as an immensely tight and strong nano velcro structure.

RadiSurf Adhesion Techology described. The polymer brushes are grown in a two-step wet-chemistry process before assembly with plastic using welding or molding techniques.