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Core–Shell Nanofibrous Materials with High Particulate Matter Removal Efficiencies and Thermally Triggered Flame Retardant Properties
- Source :
- ACS Central Science, Vol 4, Iss 7, Pp 894-898 (2018), ACS Central Science
- Publication Year :
- 2018
- Publisher :
- American Chemical Society, 2018.
-
Abstract
- Dust filtration is a crucial process for industrial waste gas treatment. Great efforts have been devoted to improve the performance of dust filtration filters both in industrial and fundamental research. Conventional air-filtering materials are limited by three key issues: (1) Low filtration efficiency, especially for particulate matter (PM) below 1 μm; (2) large air pressure drops across the filter, which require a high energy input to overcome; and (3) safety hazards such as dust explosions and fires. Here, we have developed a “smart” multifunctional material which can capture PM with high efficiency and an extremely low pressure drop, while possessing a flame retardant design. This multifunctionality is achieved through a core–shell nanofiber design with the polar polymer Nylon-6 as the shell and the flame retardant triphenyl phosphate (TPP) as the core. At 80% optical transmittance, the multifunctional materials showed capture efficiency of 99.00% for PM2.5 and >99.50% for PM10–2.5, with a pressure drop of only 0.25 kPa (0.2% of atmospheric pressure) at a flow rate of 0.5 m s–1. Moreover, during direct ignition tests, the multifunctional materials showed extraordinary flame retardation; the self-extinguishing time of the filtrate-contaminated filter is nearly instantaneous (0 s/g) compared to 150 s/g for unmodified Nylon-6.<br />A “smart” air filter which can efficiently capture tiny particulate matters while possessing a flame retardant property is developed.
- Subjects :
- Pressure drop
Materials science
Atmospheric pressure
General Chemical Engineering
02 engineering and technology
General Chemistry
Particulates
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Industrial waste
0104 chemical sciences
law.invention
chemistry.chemical_compound
Chemistry
Chemical engineering
chemistry
law
0210 nano-technology
Dust explosion
QD1-999
Filtration
Fire retardant
Triphenyl phosphate
Research Article
Subjects
Details
- Language :
- English
- ISSN :
- 23747951
- Volume :
- 4
- Issue :
- 7
- Database :
- OpenAIRE
- Journal :
- ACS Central Science
- Accession number :
- edsair.doi.dedup.....12e245808b578a32b8f6130dafac253e