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Controlled morphology of electrospun nanofibers from waste expanded polystyrene for aerosol filtration 2021-03-24

This article reports on the recycling of expanded polystyrene (EPS) waste, which will be reused as EPS nanofiber mats for air filtration applications. Compared with wrinkled and smooth fibers, the beaded fiber has the highest tensile strength and the lowest elasticity. EPS nanofiber mats are classified as superhydrophobic, which is a good standard for air filtration media.

Characterization of filter media prepared from aligned nanofibers for fine dust screen 2021-03-24

Nanofibers for fine dust filters with four structures (random, aligned, orthogonal, and nanofiber mesh) are prepared by electrospinning using polymers such as PAN and PA6. Although the traditional electret filter will encounter degradation problems in capturing fine dust (PM1.0) as the surface charge decays, the prepared electrospun nanofibers contribute to the removal ability.

Flexible Multifunctional Porous Nanofibrous Membranes for High-Efficiency Air Filtration 2021-03-24

The flexible multifunctional porous nanofiber membrane is manufactured by embedding Ag nanoparticles into electrospun porous SiO 2 -TiO 2 nanofibers by dipping method, which integrates PM filtering ability and antibacterial performance. As a high-efficiency, reusable antibacterial air filter, it has broad development potential in the actual purification of indoor environment or personal air.

Electrospun Polymer Composite Membrane with Superior Thermal Stability and Excellent Chemical Resistance for High-Efficiency PM2.5 Capture 2021-03-24

By adding PAN as a polymer, the performance of the polymer is significantly improved. PSA/PAN-B membrane shows filtration efficiency (99.52 +/- 0.32%), pressure drop (45.16 +/- 1.39 Pa), excellent flexibility, good mechanical properties and thermal stability (up to about 300 degrees Celsius), And has excellent chemical resistance.

Preparation of a polyurethane electret nanofiber membrane and its air-filtration performance 2021-03-24

We prepared polyurethane/silicon nitride (PU/Si3N4) electret nanofiber membranes with the smallest diameter (350 nm) and diameter distribution smaller than PU-boehmite, PU-SiO2 and PU-TiO2 membranes by electrospinning. . It has a good prospect in the application of window screens.

Large-scale preparation of micro-gradient structured sub-micro fibrous membranes with narrow diameter distributions for high-efficiency air purification 2021-03-24

The micro-gradient structure polyacrylonitrile (PAN) submicron fiber membrane composed of coarse, neutral and fine (C, M and F) fiber layers with different fiber diameters in the sub-micron range is fabricated by one-step free surface electrospinning. Silk technology, with large-scale production capacity, was demonstrated for the first time as an air filter.

Composites Based on Nanoparticle and Pan Electrospun Nanofiber Membranes for Air Filtration and Bacterial Removal 2021-03-24

Developed a new and improved polyacrylonitrile (PAN) nanofiber membrane, which can be used to remove air pollutants and has antibacterial activity. We have designed three different filters, which are characterized by different particles embedded in PAN nanofibers. The resulting Ag_F nanofibers showed very good antibacterial activity using E. coli suspension (10 (8) CFU/mL).

Transparent Polyurethane Nanofiber Air Filter for High-Efficiency PM2.5 Capture 2021-03-24

An electrostatic spinning method using a rotating magnetic bead spinneret is reported. By changing the concentration of TPU in the polymer solution, the PM2.5 removal rate of the nanofiber-based air filter can reach 99.654%, and the optical transparency is 60%. The contact angle and ventilation rate of the nanofiber-based air filter are 128.5 degrees and 3480 mm/s, respectively.

Hierarchical Porous Poly(L-lactic acid) Nanofibrous Membrane for Ultrafine Particulate Aerosol Filtration 2021-03-24

We report the development of a porous poly(L-lactic acid) (PLLA) nanofiber membrane filter with ultra-high specific surface area through electrospinning and post-treatment processes. The multi-porous structure with high specific surface area brings excellent filtration efficiency (99.99%) to ultrafine aerosol particles (30-100 nm) of sodium chloride (NaCl) with low pressure drop (110-230 Pa).

Nanofibers as new-generation materials: From spinning and nano-spinning fabrication techniques to emerging applications 2021-03-24

This review summarizes the history and development of nanofiber technology, the unique properties of nanofibers, manufacturing technology (using spinning and non-spinning methods), and energy harvesting and storage, environmental protection and improvement, and biomedical technology and healthcare. Emerging applications.

Towards Sustainable and Multifunctional Air-Filters: A Review on Biopolymer-Based Filtration Materials 2021-03-24

We summarized important research on the use of polymeric materials for air filtration, with a focus on natural biological materials. Specifically, a brief overview of the characteristics of the contaminated air, the type of air filter and the filter material. Emphasizes the advantages and challenges of using natural polymers to develop green air filters.

Hierarchical electrospun nanofibers treated by solvent vapor annealing as air filtration mat for high-efficiency PM2.5 capture 2021-03-24

We introduced a new type of high-efficiency air filter mat, which can be used for outdoor protection. Compared with commercial masks, SVA-treated PCL/PEO air filter pads have a simpler and more environmentally friendly preparation process, and have excellent degradation characteristics, have broad potential application prospects, and have high filtration efficiency.

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