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Chemicals

Antibacterial superhydrophobic coating

Why did we venture into this project?

  • Bacterial adhesion and subsequent biofilm formation on material surfaces represent a serious problem in our society from both economical and health perspectives.
  • Antibacterial coatings are used widely to protect surfaces and humans too.
  • Our coating is an application of chemical agent to surfaces that can stop the growth of organisms.
  • Apart from increasing the surface’s durability, appearance, corrosion resistance, etc., this coating also protects from harmful diseases caused by bacteria.
  • Self-cleaning and Decrease of detergent consumption.
  • Building facade protection: building surfaces and monuments are faced to environmental pollution (high levels of sulfate and nitrate deposition). Our coating disables degradation of inorganic pollutants (Nox, Sox) or volatile organic compounds at the material surface.

Our Innovation

  • The first approach, as the oldest method for antibacterial surface design, focuses on the use of biocides and antibacterial metallic ions such as Ag, Cu and Mo.
  • New approach uses photocatalytic materials such as TiO2 to produce highly reactive species such as hydroxyl radical, hydrogen peroxide and superoxide to kill bacteria. This method has been successful in killing Escherichia coli cells and some other types of bacteria. Applying photocatalytic agents (with biocide ability), responsible for the degradation of dirt and for the reduction of the biological growth, because the photocatalytic cleavage of bonds between microorganisms and substrates.
  • Developing antibacterial materials based on super-hydrophobicity is a new strategy.

Advantages

  • Reduce cleaning period
  • Reduce surface wear and tear
  • Self-cleaning behaviour
  • Safe and environmentally friendly materials
  • Reduce the cost of cleaning and disinfecting the environment
  • Reduce the use of detergents for cleaning up to 70%
  • Reduce environmental pollution and protecting surfaces from the effects of moisture and dirt
  • Ease of cleaning hard stains such as silicone, grease and oil with water
  • Prevent the growth and spread of mold, algae and the like in hospitals, bathrooms and toilets environments….

What is superhydrophobic surface?

  • The process of coating the surface of a material with hydrophobic property material in order to avoid sticking of liquids on that surface.
  • Repelling water to the degree that droplets do not flatten but roll off instead.
  • This is an absolutely unique way of coating, unlike conventional ones which shrink continuously to produce low porosity films.
  • It makes any surface resistant to water, oil and other liquids.
  • Mother Nature examples: broccoli, brussels sprout, cabbage, tulip leaves, lotus and the wings of butterfly.
  • Super-hydrophobicity can reduce the adhesion force between bacteria and a solid surface to enable the easy removal of bacteria before a thick biofilm is formed on the surface.
  • It is more and more acceptable to include superhydrophobic surfaces in this category even though they reduce bacterial adhesion rather than killing them directly.
  • The contaminants can be easily cleaned by washing with pressure water or wind, due to the low adhesion force of the contaminants to the surface.

Our coating has the highest durability in the market

We are working on incerasing the durability of our antibacetrial coating to 24+ months.

Material

Artifical Stone Ceramic, Tiles

Real Stone

Wood

Glass

Concrete

Metal

Durability

18m

18m

12m

12m

18m

12m

Other applications of hydrophobic surfaces

Self-cleaning

Anti-corrosion

Anti-fouling

Anti-icing

Anti-friction

Anti-salination

Mold resistance

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