We developed a new air filter (polyurethane fiber mat), filtered through a nano-scale for mass production electrospinning technique is expected to enhance filtration efficiency and pressure drop results. Optimized by adjusting the polymer concentration and the best operating conditions electrospinning effective alternative method for producing a nanofiber air filter system having a filter of improved performance.
Zein-based nanofabrics show high efficiency for removing particles of various sizes from 0.1 to 10 microns (>99.5%) and certain gaseous toxic chemicals (>70%) at the same time. Zein zein nanofibers show excellent moisture resistance and good adhesion to cellulose paper towels used as air filter substrates.
Here, the latest research and future trends of green electrospinning are explained in terms of green degradable materials, green solution electrospinning and solvent-free electrospinning. Examined green degradable materials, including biomass materials, biosynthetic polymer materials and chemical synthesis materials.
A Steiner geometric polyvinylidene fluoride (PVDF) nanofiber/nanofiber filter with a filtration efficiency of 99.995% and a pressure drop of 66.7 Pa. In addition, this filter has strong structural integrity, can be reused, has a considerable light transmittance, has excellent thermal stability, and has excellent smoke PM2.5 purification capabilities.
We can find that the surface of the PA66 transparent nano-patterned film is flatter. At the same time, the mechanical properties of the PA66 nano-patterned film are better than those of the PA66 randomly oriented film. In addition, when PA66 transparent nano-patterned window filter is used as an air filter, we found that the window filter has excellent filtration efficiency for PM0.3-5.
In the current work, a strategy is reported for the manufacture of two-layer structure poly-L-lactide/TiO2 nanoparticles (NPs) combined with polyvinylpyrrolidone (PLLA/PVP-TiO2 NPs) fiber membranes. It uses sequential electrospinning technology for air filtration.
The shape of the fiber will greatly affect the filtration performance of the membrane. The presence of beads increases the distance between the fibers, thereby reducing the pressure drop. Moreover, the basis weight of the membrane greatly affects the filtration efficiency. The efficiency of the HIPS nanofiber membrane with a weight per unit area of 12.22 gm(-2) is greater than 99.999%.
Compared with the original PAN ENM, the adsorption rates of HCHO and xylene are increased by 66% and 73%, respectively. It was found that the composite ENM is non-toxic to human lung cell lines, which indicates that it is a good candidate for both air filtration and VOC adsorption in breathing filter media.
Two types of high-performance nanofiber filters are developed by branch-shaped nanofibers, in which extra fibers are spun out to radiate from the main fibers. Subsequently, we compared them with conventional and beaded nanofiber filters in terms of particle removal efficiency, filter pressure drop and particle loading capacity.
PET / SiO2 NNF has a lower pressure drop increase rate and higher dust removal rate. The completion cycle of PET / SiO2 NNF is longer than that of PPS NF and PTFE CNF, thus prolonging its service life in practical applications. The successful synthesis of PET / SiO2 NNF provides a new method for the synthesis of innovative high-performance needle felt filters.
This study discusses the fabrication of multilayer composite membranes by a combination of electrospinning and vapor-induced phase separation (VIPS). It can be used as a stent for tissue engineering, a drug delivery device, a filter element for water, wastewater and air treatment.
Through continuous electrospinning and electrospray technology, a highly breathable and thermally comfortable film combining an asymmetric super-wet skin layer and nanofiber membrane is manufactured. Good air permeability, high filtration efficiency and low pressure drop are better than commercial polypropylene products.