Porous bead-on-string poly(lactic acid) fibrous membranes for air filtration

Wang, Zhe; Zhao, Chuchu; Pan, Zhijuan

doi:10.1016/j.jcis.2014.11.041

Cited by 271 publications

(186 citation statements)

References 42 publications

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“…[2] The performance of air filtration membranes is also affected by fiber diameter, pore size, and the general structure of morphology. [14,42,43] Fiber diameter can impact the filtration efficiency and therefore selectivity of the materials, while porosity and pore size distribution have a significant effect on pressure drop. [26] Thus, the geometrical, characterization need to be investigated in order to fabricate membranes with high selectivity and relatively low pressure drop.…”

Section: Introductionmentioning

confidence: 99%

High Efficiency Poly(acrylonitrile) Electrospun Nanofiber Membranes for Airborne Nanomaterials Filtration

et al. 2017

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The potential of poly(acrylonitrile) electrospun membranes with tuneable pore size and fiber distributions were investigated for airborne fine-particle filtration for the first time. The impact of solution concentration on final membrane properties are evaluated for the purpose of designing separation materials with higher separation efficiency. The properties of fibers and membranes are investigated systematically: the average pore distribution, as characterized by capillary flow porometry, and thermo-mechanical properties of the mats are found to be dependent on fiber diameter and on specific electrospinning conditions. Filtration efficiency and pressure drop are calculated from measurement of penetration through the membranes using potassium chloride (KCl) aerosol particles ranging from 300 nm to 12 mm diameter. The PAN membranes exhibited separation efficiencies in the range of 73.8-99.78% and a typical quality factor 0.0224 (1 Pa À1 ) for 12 wt% PAN with nanofibers having a diameter of 858 nm. Concerning air flow rate, the quality factor and filtration efficiency of the electrospun membranes at higher face velocity are much more stable than for commercial membranes. The results suggest that the structure of electrospun membranes is the best for air filtration in terms of filtration stability at high air flow rate.

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Section: Introductionmentioning

confidence: 99%

High Efficiency Poly(acrylonitrile) Electrospun Nanofiber Membranes for Airborne Nanomaterials Filtration

et al. 2017

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“…As mentioned above, the fiber diameter and morphology, especially the microstructure of its surface, have a dramatic effect on the particle capture ability and pressure drop of the relevant fibrous filter. Thus, considerable efforts have been devoted to controlling the diameter and morphology of fibers by varying the electrospinning parameters to endow the resultant filter media with a good filtration performance [27][28][29][30]. Porous nanofibers possess a large specific surface area and a rough surface [31,32], which greatly contributes to the capture of particles [33,34].…”

Section: Introductionmentioning

confidence: 99%

Preparation of hierarchical structured nano-sized/porous poly(lactic acid) composite fibrous membranes for air filtration

Wang

Pan

2015

Applied Surface Science

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135

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“…Nanofibers membrane can capture fine particles from the aerosol flow through pile of fibers and pass the clean air through the pores [2][3][4]. Good distribution of membrane porosity can then increase the filtration efficiency [5,6]. There are diversely wide range of techniques to produce nanofibers and electrospinning is one of the simplest techniques [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers have tried to use PAN in air filtration application [4,5,13]. However, they did not discuss in detail about pressure drop and its relation to the concentration of polymer solution.…”

Section: Introductionmentioning

confidence: 99%

“…Pressure drop is a very important parameter in air filter testing, because it is related to pressure or energy being applied in filtration process. Moreover, pressure drop is greatly affected by the shape and morphology of the membrane such as thickness and porosity [5]. The membrane porosity is also influenced by fibers diameter that can be controlled by adjusting the concentration of polymer solution [11].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Electrospun Nanofibers Membrane and Its Optimization for Aerosol Filter Application

Rajak¹

2016

KEG

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Nanofibers membranes were synthesized using electrospinning method for air filtration application. Polyacrylonitrile (PAN) with three different concentrations as the polymeric matrix of the nanofibers membrane is used. In the aerosol filtration, the pressure drop is one of the most important parameters, which is determined by the membrane characteristics. One of the parameters that influence the characteristics of membrane is concentration of polymer solution, in which it will determine the diameter of fiber. In this study, the relation between the PAN concentration and the pressure drop in air filtration test was examined. Three different concentrations of PAN solution (6, 9, and 12 wt.%) were employed under the same process parameters of electrospinning. The fiber diameter distribution of each membrane was measured from its scanning electron microscope (SEM) image. The three concentrations resulted in significant different effect to the pressure drop that proved the existing correlation between the polymer concentration and the air pressure drop.

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Porous bead-on-string poly(lactic acid) fibrous membranes for air filtration

Cited by 271 publications

References 42 publications

High Efficiency Poly(acrylonitrile) Electrospun Nanofiber Membranes for Airborne Nanomaterials Filtration

High Efficiency Poly(acrylonitrile) Electrospun Nanofiber Membranes for Airborne Nanomaterials Filtration

Preparation of hierarchical structured nano-sized/porous poly(lactic acid) composite fibrous membranes for air filtration

Synthesis of Electrospun Nanofibers Membrane and Its Optimization for Aerosol Filter Application

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