Effectiveness of Different Cellulose-Based Filtration Materials against Inhalation of SARS-CoV-2-Like Particles

The respiratory protection equipment (RPE) used by health professionals consists of an essential device to prevent infectious diseases, especially those caused biological agents such as the coronavirus (SARS-CoV-2). current epidemiological panorama is worrying, and context creation production mask has emerged alternative RPE face public crisis worldwide. aim this work present a low-cost FFP2-like filter for reusable respirator mask. This study presents comparison different cellulose-based filtering materials performed retention testing, time saturation aerosol penetration nanoparticle (~140 nm) filtration bacterial efficiency (BFE), analysis material morphology usability. in open-source innovation, using 3D printing. Cotton disc proved be best mask, with satisfactory results performance similar that shown N95-type cotton ensured effectiveness over 6 h use, after that, (here, Delfi-TRON®) needed sanitized replenished new disc. Upon preliminary analyses efficiency, selected was biodegradable biocompatible alternative.