I believe if a mask truly keeps me from spreading as well as absorbing someone’s virus – it is worth wearing. So what exactly does a mask achieve? Block by absorbing? Block like a wall causing bouncing out?
Findings suggest that absorptivity of mask materials is an important feature in providing protection from viruses such as SARS-CoV-2. The paper is published in Applied Materials & Interfaces, a journal of the American Chemical Society.
All too many studies have used dry particles to test mask permeability alone.
so many were published during the 2020-21 pandemic. In contrast, researchers in this investigation used a creative approach by using a virus nanoparticle suspended in artificial saliva. Spraying the suspension provides a much more realistic approach to truly compare the worth of mask materials. Thus, rather than viewing the mask as a simple screen, the study tests the adsorptive properties of the mask materials for trapping viruses in saliva droplets.
The properties of N-95 masks are well known but how about the ‘zillion’ types masks on most individuals?
Each material was characterized using a variety of methods including scanning electron microscopy and X-ray photoelectron spectroscopy. Mask was then wet with artificial salvia to replicate actual situations.
These researchers measured the likelihood of trapping and absorbing rather than just if the virus stopped. Masks absorb, thus trapping viruses.
They concluded after doing the same study without masks, that all masks have definite benefits. but you knew that!
Bottom Line -Wear/change/Wash your Mask