We report the silk fibroin nanofiber air filter. The inherent properties of silk fibroin play a key role in improving filtration performance. And because of the biodegradability of silk fibroin, the film is disposable after use. The methods and results presented here can provide a novel perspective for air filtration; pave the way for the production of safe and clean air filtration systems.
Particles smaller than 2.5 microns can easily enter the human respiratory system. Therefore, we have developed a purification material. It is much more efficient than a typical commercial fiber filter and has a much lower pressure. These features, coupled with the availability and biocompatibility of materials, have immeasurable potential in the development of air purifiers..
Both of these nanostructures improve cell viability and proliferation. In addition, this porous surface facilitates enhanced cellular response. This shows that it has the potential and biocompatibility to mimic collagen fibrils, and is used in tissue engineering, especially as a scaffold for the endothelial layer of blood vessels.
By changing different parameters (polymer concentration, voltage, feed flow rate, etc.), several nanofiber polyurethane (PU) fiber webs were electrospinned (ES). The results show that the ES membrane we selected shows a very efficient aerosol filtration effect, can completely remove particles larger than 0.5 microns, and the concentration of smaller particles is reduced by 94%.
In order to study the filtration performance of electrospun bio-based polylactic acid air filter membrane, we used gravimetric analysis to determine the permeability of three kinds of dust particles in different fiber filter membranes. The results show that it can effectively capture deeper penetrating particles, but these particles will not be captured by the electrospun air filter membrane.
In this study, a multifunctional and antibacterial nanofiber membrane was prepared. The antibacterial properties of nanofiber membranes against Escherichia coli and Bacillus subtilis were studied. The successful synthesis of SPI/PA6-AgNPs nanofiber membrane will make it a potential candidate for a new type of antibacterial and high-performance air filter.
This study demonstrated a convenient procedure with the potential to develop the antimicrobial and anti-tuberculosis properties of electrospun fibrous membranes containing G. mangostana, which are beneficial in filtration applications for respirators, face masks, and air-conditioning filters.
As the mango contained in the spinning solution increases, the amount of mango released from the sample increases proportionally. This research proves the potential of developing electrospun fiber membranes with antibacterial and anti-tuberculosis properties, which is beneficial for filtration applications in respirators, masks and air-conditioning filters.
The air filtration efficiency of the cellulose acetate dendritic nanofiber membrane can reach 99.58%, and the final cellulose dendritic membrane still maintains 98.37%. The small average pore size caused by the dendritic structure and the strong resistance to organic solvents make it a potential candidate for membrane separation.
This article reports that the DTAB modified membrane exhibits antibacterial properties against Staphylococcus aureus subspecies. A concentration of 0.5% by weight of DTAB in the spinning solution will only partially inhibit bacterial growth, while a concentration of 1.0% by weight will result in complete inhibition of bacterial growth.
The potential of ultra-light nanofiber aerogels (NFA) and nanofiber sponges for particle or aerosol filtration has been studied. These two characteristics are in sharp contrast, the pressure drop of the latter increases significantly with the increase of filtration time, and the sensitivity to high frequency operating speed is increased by 105 times.
The fiber membrane with olive-shaped beaded structure and high porosity prepared by the electrospinning method has proved to be able to be used as an air filter. The GOPAN composite membrane developed in this work has broad potential in the development and manufacture of a new generation of filter media, which has stronger performance and can be used for air purification and commercial applications.