Nanofiber for air filter comprising random copolymer having zwitterionic functional group and method for manufacturing same
A nanofiber for an air filter and a method for manufacturing the same are proposed. The nanofiber may include a styrene-(meth)acrylate-acrylonitrile random copolymer having a zwitterionic functional group in a side chain. The nanofiber can greatly enhance the bonding of particulate matter (PM) particles with the surface of a polymer by having a high dipole moment derived from the zwitterionic functional group, thereby providing high efficiency of filtration (>99.9%) of the PM particles. Furthermore, the nanofiber can be very usefully used as a core material for air purifier filters and vehicle air purification filters by having low airflow resistance and excellent antibacterial properties.
1 . An air filter nanofiber comprising a styrene-(meth)acrylate-acrylonitrile random copolymer having a zwitterionic functional group in a side chain thereof, wherein the styrene-(meth)acrylate-acrylonitrile random copolymer comprises polystyrene-co-poly 2-(dimethylamino)ethyl methacrylate-co-poly(acrylonitrile).
2 . The air filter nanofiber of claim 1 , wherein the nanofiber has a fiber diameter of 150 nm to 200 nm.