Some Consideration About Mask Penetration: Influence of Material Properties, Particle Size and its Morphology As Well As Particle Physical Quantities

In this work composition, size, morphology and other physical quantities dependency of the most widespread face respirators and surgery masks are investigated using different aerosol sources in the submicron size domain. The airborne filtration efficiency of the sample materials are also demonstrated here. We have experimentally demonstrated high filtration efficiency of NaCl, soot, DEHS and distilled water as well as airborne aerosols with limited size dependency. Using different mixing of distilled water and Sodium Lauryl Sulphate (SLS) surface tension dependency of filtration efficiency have been also quantified. It is experimentally demonstrated that the filtration efficiency is increased with increasing surface tension and the highest filtration efficiency have been realised with salvia equivalent surface tension value regardless of the sampled respirators or surgery mask. Finally, we also experimentally demonstrated that respirators has higher filtration efficiency than that of surgery mask and that the exhalation direction of the flow has negligible effect on filtration efficiency in all samples.