Membrane technology, as one of the key standard technologies for green chemistry and
sustainable development, has been applied for a wide range of separation and purification …

After the spread of Covid 19 worldwide, the use of cloth masks increased significantly due to
a shortage of medical masks. Meanwhile, there were different opinions about the …

In this study, filtration efficiency of different respirators, face masks, and a 2-ply cotton
handkerchief bandana was compared for particles in the size range of 60 nm–4 µm under a …

We evaluate the outward and inward protection efficiencies of different mask types (N95,
surgical and two cloth mask designs) taking into account the imperfect fit on the wearer. To …

Current guidance by leading public health agencies recommends wearing a 3-layer cloth-
based face mask with a middle non-woven material insert to reduce the transmission of …

The recently emerged novel coronavirus,“severe acute respiratory syndrome coronavirus‐2
(SARS‐CoV‐2),” caused a highly contagious disease called coronavirus disease 2019 …

Background Face masks from worldwide satisfy different standards during the COVID-19
pandemic, which led to the public misunderstanding of the concepts. Methods We …

The COVID-19 pandemic has hugely affected the textile and apparel industry. Besides the
negative impact due to supply chain disruptions, drop in demand, liquidity problems, and …

Public health agencies have recommended the community use of face masks to reduce the
transmission of airborne diseases like COVID‐19. Virus transmission is reduced when …

The particle filtration efficiency (PFE) of a respirator or face mask is one of its key properties.
While the physics of particle filtration results in the PFE being size-dependent, measurement …