New Powerful Weapons Against Covid Layered Face Masks

New Powerful Weapons Against Covid Layered Face Masks

Layered Face Masks: A New Weapon Against COVID

Researchers have developed an inexpensive and non-toxic structure suitable for almost any type of fabric that can reduce the infectivity of SARS-CoV-2, the type of coronavirus that causes COVID-19, by up to 90%.

For researchers at the University of British Columbia (UBC), in the future each of us will be able to spray this coating on fabrics to protect against the coronavirus.

Way of Light

In the study, the scientists immersed cloth in a solution that was based on a bactericidal polymer, which is a molecule that releases a form of oxygen with a cleansing effect when exposed to light.

They then used ultraviolet light to turn the solution into a solid layer on the fabric.

"This array has both passive and active antimicrobial properties," said lead author Doctor Michael Wolf, a professor of chemistry at UBC.

"It kills bacteria when they come into contact with it, and that character is enhanced when the fabric is exposed to light."

Hydrophobic Fabric

All coating components are comfortable for humans to use, whereas the "light" process used to make antimicrobial coatings takes close to an hour at room temperature, said research co-author Taylor Wright, a doctoral researcher at the Ministry of Chemistry.

Researchers suggest that the arrangement also makes the fabric hydrophobic, meaning that pathogens are less likely to stick to it.

Low Pay and Easy to Make

A bonus advantage of this innovative arrangement is that it can be used on almost any type of fabric, such as cotton, polyester, jeans, and silk – with possible applications for hospital fabrics, fabrics for protective masks, and sportswear.

While other such technologies require a lot of labor or expensive equipment to develop, the method used by UBC scientists is low-cost and relatively easy to implement.

"All we need is a pitcher and an electric light bulb," says Wright. "I believe I can complete the process of making a coating on a simple home electric stove."

Bacterial “Soup” Experiment

To test the antimicrobial properties of the array, the researchers dipped the coated cloth in a "soup" of germs containing Escherichia coli (E. coli) and golden staphylococcus bacteria that are resistant to methicillin (MR) nosocomial inflammation.

They found that after 30 minutes, 85% of E. coli bacteria remained on the cloth, dropping to 3% when the cloth was exposed to the green light for 30 minutes.

Correspondingly, 95% of MRSA germs are always present on the fabric before being hit by the green light, after that the level drops to 35%. After 4 hours there are no live germs on the fabric.

Green Light Exposure

Given that sunlight and fluorescent lighting have a lower percentage of green light, the research team expected uniform but less efficient results when the fabric was exposed to this light source. Therefore, when extra protection is needed, the team recommends placing the cloth in a room with a green light bulb – which costs several tens of euros.

The scientists are also looking at whether the structure they developed could reduce the infectivity of the current SARS-CoV-2 virus. They soaked the quilted cloth in a solution that had virus particles and then exposed the solution to living cells to see if it could infect them.

When the cloth was placed on a green light base for 2 hours, a reduction of up to 90% in SARS-CoV-2 infectivity was noted.

Layered Face Masks: A New Weapon Against COVID

"Making a face mask based on this new technology could be a significant bonus for our arsenal against COVID-19, especially in terms of large transmission variants of SARS-CoV-2 such as Omicron," said Doctor François Jean, Prof. Virology at UBC, colleague. the author of this research.

Hospital Cloth and Sportswear

This new arrangement can also be used on sportswear fabrics, covering surfaces exposed to sweat and thereby eliminating germs associated with the unpleasant odor of sweat.

For researchers, the University has filed a patent for the technology in the United States with hospital fabrics and the sportswear industry has shown interest.

The scientists are also looking at whether the structure they developed could reduce the infectivity of the current SARS-CoV-2 virus. They soaked the quilted cloth in a solution that had virus particles and then exposed the solution to living cells to see if it could infect them.

When the cloth was placed on a green light base for 2 hours, a reduction of up to 90% in SARS-CoV-2 infectivity was noted.

Layered Face Masks: A New Weapon Against COVID

"Making a face mask based on this new technology could be a significant bonus for our arsenal against COVID-19, especially in terms of large transmission variants of SARS-CoV-2 such as Omicron," said Doctor François Jean, Prof. Virology at UBC, colleague. the author of this research.

Hospital Cloth and Sportswear

This new arrangement can also be used on sportswear fabrics, covering surfaces exposed to sweat and thereby eliminating germs associated with the unpleasant odor of sweat.

For researchers, the University has filed a patent for the technology in the United States with hospital fabrics and the sportswear industry has shown interest.

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