New generation washable PES membrane face mask for virus filtration

Self-Sanitization in a Silk Nanofibrous Network for Biodegradable PM0.3 Filters with In Situ Joule Heating

“…The four layers of the SNN exhibited the best filtration efficiencies for all PM. With the increase in layers of the SNN, the face mask captured more PM owing to restricted motion due to a mismatch in porosity . The uniform distribution of the nanopores in SNN over a large surface area facilitates PM filtration and an adequate aerodynamic fluency.…”

“…With the increase in layers of the SNN, the face mask captured more PM owing to restricted motion due to a mismatch in porosity. 58 The uniform distribution of the nanopores in SNN over a large surface area facilitates PM filtration and an adequate aerodynamic fluency. In general, the larger PM (PM 1.0 ) is captured in face masks due to interception and inertial impaction.…”

Fabrication of a polyethersulfone/polyethyleneimine porous membrane for sustainable separation of proteins in water media

“…Guangzhou Institute of Advanced Technology and the Chinese Academy of Sciences contributed to the thickness measurements by employing a thickness gauge (CH-1-ST type). In their study, 15 Talukder et al described a method for determining the tensile strength of membranes. Employing a tensile strength tester (KD-model BA-100m by Transcell Technology, China), each membrane measuring 50 mm was elongated at 20 mm min −1 up to membrane breaking points.…”

“…PES (22 wt%) was dissolved in DMAC solvent at 50 °C to make the porous membrane solution. 15 Subsequently, the PEI polymer (2 to 4 wt%) and PVP (1% for all samples) were added to the homogeneous PES solution, and magnetic stirring was continued at 50 °C. A casting knife (300 μm gap between the knife and glass plate) was utilized for casting polymer solutions onto a glass plate, and the cast porous membrane was kept for one min in an oven at 50 and 100 °C with solvent, such that the DMAC and distilled water (DW) mixture solution was kept inside the drying oven.…”

“…Particularly, PES is often used to manufacture porous membranes because of its good miscibility, chemical and mechanical stability, and high glass transition temperature. [15][16][17][18] PES is typically considered a "standard" membrane fabrication material since it is readily available and has well-defined features compared to other polymers with equal or even greater capabilities. PES-based membranes have been widely used in water treatment, material separation, and hemodialysis in food and medicinerelated fields.…”