From bagasse to a new nano-particle removing material. Source: QUTAmid a global face mask shortage due to the COVID-19 pandemic and subsequent disruptions to the supply chain, a team from Queensland University of Technology in Australia has developed a mask that is capable of removing particles under 100 nanometers (nm) — essentially the same size as viruses.

The mask, which is a breathable, biodegradable nanocellulose material composed of plant and agricultural waste such as sugar-cane bagasse, effectively removed virus-sized nanoparticles during testing better than the high-quality masks currently on the market.

The masks were also tested for breathability, proving more breathable than surgical masks. Because these masks are generally worn for extended periods of time, breathability improves the wearer’s comfort levels.

Due to its material composition, the mask's developers believe that the material is inexpensive and easy to manufacture in large quantities. As such, the team is exploring the material’s potential for use as a disposable filter in face masks.