Nude and Modified Electrospun Nanofibers, Application to Air Purification

Abstract

Air transports several pollutants, including particulate matter (PM), which can produce cardiovascular and respiratory diseases. Thus, it is a challenge to control pollutant emissions before releasing them to the environment. Until now, filtration has been the most efficient processes for removing PM. Therefore, the electrospinning procedure has been applied to obtain membranes with a high filtration efficiency and low pressure drop. This review addressed the synthesis of polymers that are used for fabricating high-performance membranes by electrospinning to remove air pollutants. Then, the most influential parameters to produce electrospun membranes are indicated. The main results show that electrospun membranes are an excellent alternative to having air filters due to the versatility of the process, the capacity for controlling the fiber diameter, porosity, high filtration efficiency and low-pressure drop.

Polyvinylidene Fluoride-co-hexafluoropropyle Electrospun Nanofiber Membranes for PM0.3 Filtration

“…Electrospinning technology is a versatile and effective method for preparing nanofibers with unique properties. , The diameters of the nanofibers prepared by the electrospinning technology range from 10 to 1000 nm, offering outstanding properties, such as high specific surface area, good internal connectivity, controllable morphology, and a unique porous structure. ,, Therefore, the effectiveness of electrospun nanofiber membranes in air filtration has been extensively demonstrated. , For instance, Al-Attabi et al fabricated polyvinylidene fluoride (PVDF) nanofiber membranes via electrospinning technology, and the nanofiber density and air filtration performance were regulated by the optimization of the electrospinning process. The obtained PVDF nanofiber membranes showcased enhanced mechanical strength in conjunction with reduced nanofiber diameters and exceptional air filtration performance, achieving a filtration efficiency of 99.7% and a pressure drop of 271.5 Pa at 300 nm aerosol particle size.…”

“…21,22 The diameters of the nanofibers prepared by the electro- spinning technology range from 10 to 1000 nm, offering outstanding properties, such as high specific surface area, good internal connectivity, controllable morphology, and a unique porous structure. 14,23,24 Therefore, the effectiveness of electrospun nanofiber membranes in air filtration has been extensively demonstrated. 25,26 For instance, Al-Attabi et al 27 fabricated polyvinylidene fluoride (PVDF) nanofiber membranes via electrospinning technology, and the nanofiber density and air filtration performance were regulated by the optimization of the electrospinning process.…”

Electrospun nanofibers for medical face mask with protection capabilities against viruses: State of the art and perspective for industrial scale-up

“…Although several processing parameters, such as air velocity, melt flow index, processing temperature, and orifice size can be tuned to obtain smaller MB based fibers [ 21 , 26 ], the MB fibers developed so far on laboratory scale as filter media for face mask application are characterized by fiber diameter of about the submicron size [ 23 , [86] , [87] , [88] ]. Unlike the MB process, the fibers obtained with ES method can reach diameter size down to 100 nm and a broad range of polymer materials have been successfully electrospun into nanofibers so far [ 26 , 89 ]. A decrease of the fiber diameter to the nanoscale has been observed to contribute in increasing the capture of fine aerosols particles (< 0.5 μm) [ 62 , 90 , 91 ].…”

Nanometric Mechanical Behavior of Electrospun Membranes Loaded with Magnetic Nanoparticles

“…Electrospun membranes are of great interest from an applicative point of view. They can be designed for application as filtering devices [ 13 , 14 , 15 , 16 , 17 , 18 ], in biomedical applications and tissue regeneration [ 19 , 20 , 21 , 22 ], as promoters of antibacterial properties [ 23 , 24 , 25 , 26 ] or as modifiers, in the form of thermoplastic veils, for improving interlaminar toughness of fiber-reinforced epoxy composites, and for dispersing in them nanofillers [ 27 , 28 ].…”