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(a) The schematic diagram of filtration equipment; (b) the filtration mechanism diagram of nanofiber filter materials; the filtration efficiency, pressure drop, and quality factor of (c) single-spinning PDLA fibers and (d) side-by-side fibers with different AlCl3 contents; (e) the air permeability performance of single-spinning PDLA fibers and side-by-side fibers with different AlCl3 contents.
