Figure 7.

SEM images of the s-s+AlCl₃ nanofibers (a) before and (b) after filtration; (c) the filtration efficiency, (d) pressure drop, and (e) quality factor of single-spinning and side-by-side fibers before and after adding 1 wt% AlCl₃ under different basis weight conditions; (f) the filtration efficiency and (g) pressure drop of single-spinning and side-by-side fibers before and after adding 1 wt% AlCl₃ under different airflow conditions; (h) the air permeability performance of PLLA, PDLA, PDLA+AlCl₃, s-s, s-s+AlCl₃ fiber membranes.