High-performance anti-haze window screen based on multiscale structured polyvinylidene fluoride nanofibers

Polyvinylidene fluoride multi-scale nanofibrous membrane modified using N-halamine with high filtration efficiency and durable antibacterial properties for air filtration

“…To determine the relative balance between filtration performance and antibacterial efficiency, the ultrafine PVDF nanofibers were spun on the surface of PVDF-PAA-TMP-Cl nanofibers (P-1, P-2, and P-3) with different weights to improve their filtration performance. Based on a previous study, the PVDF ultrafine fiber layer was re-spun to 0.5 ± 0.12 g m -2 [28] . As shown in Figure 5 a, the pore size distributions of the P-1, P-2, and P-3 samples were concentrated as the weight increased, and the average pore sizes were 3.86, 2.35, and 1.98 μm for P-1, P-2, and P-3, respectively.…”

“…In previous studies, we constructed multi-scale PVDF nanofibrous membranes comprising scaffold (200 ± 5 nm) and ultrafine nanofibers (20–35 nm) using electrospinning technology, which had a PM 0.3 capture efficiency of up to 99.92% and an airflow resistance of 69 Pa [28] . Similarly, Zhang et al prepared interconnected ultrafine nano-networks (20 nm) via electrospinning/netting, and their results showed a PM 2.5 capture efficiency of 99.984% and an airflow resistance of 68 Pa [29] .…”

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

“…For high filtration performance electrospun air filter, enhanced filtration effects and low resistance are essential [70] . However, the existing filtration theory based on single fiber cannot well explain the high filtration performance reasons of electrospun nanofibrous membrane.…”

“…Bimodal fibrous structure refers to the complex of two fibers with significantly different diameters, where coarse fibers are used as supporting skeleton to reduce pressure drop, and fine fibers are used as the main filtration layer [29] , [70] , [139] .…”

Dual-Structure PVDF/SDS Nanofibrous Membranes for Highly Efficient Personal Protection in Mines

“…Polyvinylidene fluoride has excellent mechanical properties [ 11 , 12 , 13 , 14 ], chemical resistance, biocompatibility, etc. These excellent properties of PVDF and the structural uniqueness of electrospun nanofibers make PVDF nanofiber membranes widely used [ 15 , 16 , 17 , 18 ]. However, because the fiber diameter of PVDF fiber membranes is still larger, the filtration performance is difficult to improve further.…”