Currently, almost 70% of the world’s population occupies urban areas. Owing to the high population density in these regions, they are exposed to various types of air pollutants. Fine particle air pollutants (<2.5 μm) can easily invade the human respiratory system, causing health issues. For fine particulate matter filtration, the use of a face mask filter is efficient; however, its use is accompanied by a high-pressure drop, making breathing difficult. Electrostatic interactions in the filter of the face mask constitute the dominant filtration mechanism for capturing fine particulate matter; these masks are, however, significantly weakened by the high humidity in exhaled breath. In this study, we demonstrate that a filter with an electrostatically rechargeable structure operates with normal breathing air power. In our novel face mask, a filter membrane is assembled by layer-by-layer stacking of the electrospun PVDF nanofiber mat formed on a nylon mesh. Tribo/piezoelectric characteristics via multilayer structure enhance filtration performance, even under air-powered filter bending taken as a normal breathing condition. The air gap between nanofiber and mesh layers increases air diffusion time and preserves the electrostatic charges within the multi-layered nanofiber filter membrane under humid air penetration, which is advantageous for face mask applications.
Membranes with artificial free-volume for biofuel production
Polymer - BI without the BS
Polymers, Free Full-Text, nmm2 values
Polymerization, Definition, Classes, & Examples
Polymers, Free Full-Text, códigos de double xp no block street
represents the details of unbiased simulation with single polymers
Free Radical Polymerization - an overview
Polymers, Free Full-Text
What Are Polymers - Reading
Polymers, Free Full-Text, Conductive Thread
Polymers, Free Full-Text
Scientists Say: Polymer
Polymers, Free Full-Text, Conductive Thread
Polymers, Free Full-Text, códigos de double xp no block city
Polymers, Free Full-Text, Resin Curing