Figure 4: In situ time evolution study, 3D modeling, and morphology change of airborne particle capture by PMIA nanofiber/nets filters.
(a) In situ study of NaCl aerosol particle capture by PMIA NF/N (~0.1 g m−2) characterized by SEM showing morphologies before and after the filtration process. (b) 3D model illustrating the filtration process of PMIA NF/N membrane for 300–500 nm particles by physical sieving and surface filtration: (1) absolute removal manner and (2) robust air permeability. FE-SEM images of (c) the top surface and (d) cross section of PMIA NF/N membrane with a basis weight of 0.365 g m−2 after filtration (air flow of 32 L min−1, testing for just 1 min).
