Low resistance bicomponent spunbond materials for fresh air filtration with ultra-high dust holding capacity

Liu, Jinxin; Zhang, Xing; Zhang, Haifeng; Zheng, Liping; Huang, Chen; Wu, Haibo; Wang, Rongwu; Jin, Xiangyu

doi:10.1039/c7ra07694k

Cited by 48 publications

(49 citation statements)

References 30 publications

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“…Quality factor (QF) is usually used to characterize the filtration performance of filter materials [34][35][36][37], and it could be calculated by the following equation: QF � −…”

Section: Structure and Filtration Property Of The Grafted Melt-blown mentioning

confidence: 99%

Fabrication of Polypropylene-g-(Diallylamino Triazine) Bifunctional Nonwovens with Antibacterial and Air Filtration Activities by Reactive Extrusion and Melt-Blown Technology

Liu

Dai

Zhou

et al. 2019

Journal of Chemistry

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Air filtration materials such as protective masks can protect humans from airborne pathogens; however, most of the existing protective filtration materials are aimed to intercept bacteria. Therefore, in this work, modified polypropylene- (PP-) based melt-blown nonwovens with antibacterial property were prepared for reducing the infection rate during the filtering process. Firstly, an N-halamine precursor, 2,4-diamino-6-diallylamino-1,3,5-triazine (NDAM) monomer, was grafted with PP polymers (PP-g-NDAM) by reactive extrusion method, and the grafting effect was confirmed by nitrogen analysis and FTIR spectra. Then, the obtained PP-g-NDAM was mixed with pristine PP resins in different ratios to prepare the filter materials by melt-blown technology. Finally, the new PP-g-NDAM melt-blown filter materials were finishing treated by the chlorination and electrostatic process, which showed a high filtration efficiency with low pressure drop and a potent antibacterial effect against Escherichia coli (E. coli). This work provides an innovative method for manufacturing antibacterial filtration nonwovens, which can improve the quality of conventional filtration products.

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“…Quality factor (QF) is usually used to characterize the filtration performance of filter materials [34][35][36][37], and it could be calculated by the following equation: QF � −…”

Section: Structure and Filtration Property Of The Grafted Melt-blown mentioning

confidence: 99%

Fabrication of Polypropylene-g-(Diallylamino Triazine) Bifunctional Nonwovens with Antibacterial and Air Filtration Activities by Reactive Extrusion and Melt-Blown Technology

Liu

Dai

Zhou

et al. 2019

Journal of Chemistry

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“…As a consequence, the dust-holding capacity is enhance The dust-holding capacity of R/Z-PET/nano-PLA mat (1.0 g m −2 ) was improved comparing with that of R 2.5 /N-PET/nano-PLA mat (0.9 g m −2 ) after loading for min. The fluffy 3D gradient structure in R/Z-PET/nano-PLA mat provides more space for the particles and extends the effective time for the particles diffusion inside the R/Z-PET layer [47], which results in the higher dust-holding capacity and FE (Fig. 4).…”

Section: The Dust-holding Capacity Of Optimal R/z-pet/ Nano-pla Matmentioning

confidence: 99%

High filtration efficiency fluffy material: nano-fiber constructing gradient structure on recycled curved PET micro-fibers web

Deng

Zhang²,

Zhang

et al. 2019

SN Appl. Sci.

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High efficiency filtration materials focus on electreted melt-blown polypropylene nonwoven and nano-scale fibers membrane in industry. However, the charge decay and the balance of efficiency and resistance are still facing challenges on research and practical applications. In this research, combined with traditional electrospinning and carding process, a simple and new fluffy gradient filtration material was designed by constructing nano-scale poly(lactic acid) (nano-PLA) fiber membranes on recycled three-dimensional curved poly(ethylene terephthalate) (R-PET) micro-fibers webs. Influences of basis weights of nano-PLA membranes and curved types of R-PET fibers on the filtration performance and the dust-holding capacity of R-PET/nano-PLA mats were investigated. Besides, the filtration mechanism of R-PET/nano-PLA mats was systemically studied. Results show that R-PET with zigzag curve (R/Z-PET) possesses the highest filtration efficiency of 99.992% comparing with 99.517% of linear R-PET, the pressure drop fall to 201.11 Pa, and a quality factor level up from 0.024 to 0.047 Pa −1. The pressure raising rate of the R/Z-PET/nano-PLA mat is the slowest. R/Z-PET fibers with a folding angle of 90° benefit to decrease the friction between fiber and particles when the location angle of zigzag fiber is 45° along the airflow direction, which decrease the pressure drop at high filtration efficiency. Surface residual charges contribute some effect on the overall filtration performance of the R-PET/nano-PLA mat. A new way of simple curved micro-PET fiber combining with nano-scale fibers provides an industrial available path to mass production of high efficiency filtration material serving for air pollution control without electret process.

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“…Nowadays, the fibrous filters have been widely used for PM2.5 filtration due to their fascinating features, such as relatively energy‐efficiency, cost‐effectiveness, and ease of scalable fabrication . The typical fibrous filters include needle‐punched filters, spunbond filters, melt blown filters, and electrospun filters . Among them, fibers from needle‐punched filters and spunbond filters possess a large diameter (~10 μm), making them suitable to be used as coarse filters.…”

Section: Introductionmentioning

confidence: 99%

Design of three‐dimensional gradient nonwoven composites with robust dust holding capacity for air filtration

Zhang

Liu

Zhang

et al. 2019

J of Applied Polymer Sci

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Air pollution has seriously threatened public health in developing countries. However, it is still a big challenge for fabricating a filter with high filtration efficiency, low air resistance, and long service life. Herein, we report a facile strategy to fabricate a multilayered nonwoven composite with a functionally gradient structure for air filtration by a combined method of needle‐punch, melt blown, and corona charging techniques. Our integrated multilayer needle‐punched/melt blown composite filter could achieve a high filtration efficiency up to 99.52 ± 0.01%, a low pressure drop of 136.87 ± 0.49 Pa, and a satisfied quality factor of 0.03898 ± 0.0001 Pa−1 for sodium chloride particles with an aerodynamic diameter of 0.26 μm at the airflow rate of 85 L min−1. More importantly, the resultant filter exhibited a large dust holding capacity of 23.5 ± 0.41 g m−2, which indicates a long service life. It is expected that our multilayer needle‐punched/melt blown composite fabric may not only serve as a good candidate for air filtration, but also provide a new sight for designing the air filtration materials. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47827.

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Low resistance bicomponent spunbond materials for fresh air filtration with ultra-high dust holding capacity

Abstract: Three-dimensional fluffy air filtration materials with low resistance and ultra-high dust holding capacity were fabricated by a bicomponent spunbond technique.

Cited by 48 publications

References 30 publications

Fabrication of Polypropylene-g-(Diallylamino Triazine) Bifunctional Nonwovens with Antibacterial and Air Filtration Activities by Reactive Extrusion and Melt-Blown Technology

Fabrication of Polypropylene-g-(Diallylamino Triazine) Bifunctional Nonwovens with Antibacterial and Air Filtration Activities by Reactive Extrusion and Melt-Blown Technology

High filtration efficiency fluffy material: nano-fiber constructing gradient structure on recycled curved PET micro-fibers web

Design of three‐dimensional gradient nonwoven composites with robust dust holding capacity for air filtration

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