TY - JOUR TI - Improvement of air permeability of Bubbfil nanofiber membrane AU - Wang Fei-Yan AU - He Ji-Huan AU - Sun Qi-Long AU - Yu Jin JN - Thermal Science PY - 2018 VL - 22 IS - 1 SP - 17 EP - 21 PT - Article AB - Nanofiber membranes always have extremely high filter efficiency and remarkably low pressure drop. In order to further improve air permeability of bubbfil nanofiber membranes, the plasma technology is used for surface treatment in this paper. The results show that plasma treatment can improve air permeability by 4.45%. Under higher power plasma treatment, earthworm like etchings are produced on the membrane surface with fractal dimensions of about 1.138.