Polymer nanofibrous membranes

NnF MBRANE® – PAN (Polyacrylonitrile)

Product description

NnF MBRANE – PAN (Polyacrylonitrile) is a novel kind of nanofibrous mambrane produced by industrial production technology operated by Pardam, s.r.o. in the Czech Republic. Nanofibrous layer is deposited on the top of a supporting substrate with air permeating structure made of virtually any material on customers` request – woven/nonwoven textiles, filtration paper... or without support. Combination of the grammage of nanofibrous layer and a type of supporting substrate enable manufacturing of filtration membranes with different permeability and filtration efficiency. Nanofibrous membrane posses small pore size with simultaneously high permeability due to its open fibre structure. This characteristics, high chemical resistance and high flexibility predestine this material for separator in Li-ion batteries or fuel cells. 


SEM image, magnification: 2600x
SEM image, magnification: 9100x

Physical properties

Physical form and structure

Thin NnF layer of PAN on PP support

Material characteristics

fiber structure randomly oriented
typical fiber diameter 200-600 nm
fiber length continuous
physical form thin layer
grammage 0,5-15 g/m²
air permeability 40-400 l/min/dm²
width of the roll 0,5-1,1 m
maximum length of the roll 2000 m
melt point 317 °C
vicat softening point N/A

Breathable | High flux | Chemically stable with the exception of organic solvents | Flexibility | Peal-ability – it is possible to use nanofibrous layer without support material

Type of supporting substrate and grammage of nanofibrous layer determine the membrane permeability and filtration efficiency. Those parametres can be modified in accordance to customers demand.

Additional post treatment available:
Lamination of nanofibrous membranes (double / triple sandwich material) | Doping with functionalized particles (Ag, ZnO, TiO2... antibacterial function).

Please feel free to contact us for more info. 


Air | Liquid | Water filtration | Separation processes | Li-ion battery separator | Fuel cell separator 


Important notice:

Production of two layer polymer nanofiber membrane (combination of polymers from our portfolio) in one production step is also possible (mechanical and functional properties improvement).