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Contagion by most viruses, including Covid-19, occurs through small droplets in the nose or mouth that spread when a person with the contamination coughs or exhales it. These droplets are deposited on objects and surfaces around them and other people contract Covid-19 when they come into contact with these objects and / or surfaces as soon as in sequence, touching mucosal regions such as eyes, nose or mouth.



The recommendation of the WHO (World Health Organization) is that if you suspect that a surface is contaminated, wipe it with a disinfectant and avoid touching your eyes, mouth or nose. Afterwards, sanitize your hands with alcohol or wash them with soap and water.


And if this surface has the ability to eliminate the coronavirus?

WHO evaluated studies show that the coronavirus can persist on surfaces for several hours or even several days.


This can vary and depends on local conditions, climate and humidity. In the case of SARS-coronavirus VOC, studies indicate that the survival time of these microorganisms on surfaces as common Teflon, PVC, glass, ceramics, rubber and stainless steel can reach five daysFacilitating local infection between individuals and facilitating the spread of diseases.

Accordingly, incorporating the surface treatment additives which induce the death of microorganisms is highly desirable.


Currently, the literature shows examples of composite or additives which are incorporated in coatings and surfaces, which proved to promote death of microorganisms.

Examples can be cited nanoparticles (NP): silver (Ag-NPs) and zinc oxide (Zn-NP), both additives present in the portfolio of products TNS.

Already exist in the literature studies that point to a promising advance the use of silver nanoparticles (Ag-NPs) in multiple markets.


Many successful attempts have been made to study the role of Ag-NPs in inhibiting the growth of viruses, such as the influenza virus, Herpes simplex type 1 and type 2 (HSV-1 and HSV-2), tacarib virus Coxsackievirus B3 (TCRV), Vaccinia virus (VACV), human parainfluenza virus type 3 (HPIV-3), hepatitis B virus (HBV) and varicella virus (MPV). However, the exact mechanism for the action of these nanoparticles is still poorly understood. But it is already reported in the literature that the smaller the size of Ag-NPs, the greater the effectiveness of inhibition.


Ag-NPs stabilized with special chemicals, inhibit HSV-1 because they help prevent virus binding to host cells and thus viral entry into cells. Another reason is that the functionalized AGNPS mercaptoethanesulfonate have the ability to mimic heparan sulfate (primary cell receptor HSV) and therefore these AGNPS begin to compete with the virus for binding the cell.


Antimicrobial TNS in action

And how can we promote safer surfaces of contamination? The formation of films containing NPs needs some polymer (natural or otherwise) allowing adhesion of NPs to the substrate and prevent its easy leaching of the coating.

Based on scientific research, the TNS team joined in a task force to organize information and present this compiled with different options of incorporation of their nanoparticles and other additives.


Our team of experts is available in the email: [email protected] for samples, reports and information can be shared with society in general.