Air Filter Media
Electrospun nanofibers are suitable for air filtration due to their small pore size
and high specific surface area. The average pore size of nanofiber membranes are
much smaller than microfiber membranes which can capture dust particles on its surface
and ultimately improves filtration efficiency. Nanofiber layers can be coated on
a variety of filter substrates which have different applications in automotive,
power plants and industrial air filters in various filter classes.
The following figure shows the efficiency and pressure drop of a common air filter
and nanofiber coated air filter. As shown in the figure, FNM’s air filter media
which is coated by a layer of nanofiber has much higher efficiency than common (without
nanofiber) air filter media, while the pressure drop of nanofiber coated air filter
media is not increased significantly.