Pore structure design and optimization of electrospun PMIA nanofiber membrane

Du, Xiongfei; Zheng, Huifang; Zhang, Yuxin; Zhao, Naijia; Chen, Mingxing; Huang, Qinglin

doi:10.1016/j.jtice.2022.104512

Cited by 9 publications

(6 citation statements)

References 59 publications

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“…The variation in the fiber diameter also affects the pore size and porosity of the fiber web. 31 As shown in Figure 3a and S2d, the average pore diameters of the pure PS and PS−PHMS-5% fiber membranes were 3.44 ± 0.35 and 2.96 ± 0.26 μm, and their porosities were 75.9 and 88.3%, surface areas were 42.56 and 156.23 m 2 /g, respectively. The average pore diameter of PS− PHMS-20% decreased further to 560 ± 46 nm, its porosity increased to 94.6%, and its surface area increased to 289.56 m 2 /g.…”

Section: Resultsmentioning

confidence: 86%

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Polystyrene/Polymethylhydrosiloxane Multiscale Electrospun Nanofiber Membranes for Air Filtration

Wang,

Han,

Liu

et al. 2023

ACS Appl. Nano Mater.

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Developing high-performance filtration materials is crucial for the effective removal of airborne particulate matter. However, balancing the filtration efficiency and pressure drop in these filtration materials and simultaneously achieving high efficiency and low resistance remain challenging. In this study, we observed that the addition of poly(methylhydrosiloxane) (PHMS) contributes to the refinement of PS fibers and can improve the hydrophobicity of the membrane. Therefore, PHMS-doped polystyrene (PS) multiscale nanofiber composite membranes were prepared by electrospinning, and their filtration performance was systematically investigated. By integrating fibers with diameters 62 and 430 nm, doped with 5 and 20% PHMS, respectively, a multiscale nanofibre membrane was constructed, which achieved high filtration efficiency (99.90% for PM0.3), low resistance (pressure drop 63 Pa), and a quality factor of 0.0893 Pa–1. After 10 filtration cycles, the membrane sustained 99% efficiency, surpassing that of commercial filters in terms of long-term filtration performance. The filtration efficiency and pressure drop of the multiscale nanofiber membrane were simulated by establishing an airflow field, and the simulation results confirmed the excellent filtration performance. The present study introduces an innovative methodology for fabricating high-efficiency and low-resistance nanofibers as air filtration materials.

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Section: Resultsmentioning

confidence: 86%

“…The variation in the fiber diameter also affects the pore size and porosity of the fiber web . As shown in Figure a and S2d, the average pore diameters of the pure PS and PS–PHMS-5% fiber membranes were 3.44 ± 0.35 and 2.96 ± 0.26 μm, and their porosities were 75.9 and 88.3%, surface areas were 42.56 and 156.23 m 2 /g, respectively.…”

Section: Resultsmentioning

confidence: 96%

Polystyrene/Polymethylhydrosiloxane Multiscale Electrospun Nanofiber Membranes for Air Filtration

Wang,

Han,

Liu

et al. 2023

ACS Appl. Nano Mater.

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show abstract

“…25 Significant improvements in the performance of lithium-ion battery separators have been achieved through the enhancement of mechanical strength in modified electrospun membranes in recent years. [26][27][28][29][30] For example, fibers are collected onto a drum rotating at a high speed instead of on a static collector; the fiber filaments will be aligned in the direction of the drum's rotation. 31,32 In this way, the mechanical strength of the poly (phthalazinone ether sulfone ketone) membrane in a certain direction is greatly enhanced, reaching up to 22.8 MPa.…”

Section: Introductionmentioning

confidence: 99%

Mechanically enhanced battery separator prepared by hot‐pressing electrospun polyvinylidene fluoride@polymethyl methacrylate membranes with different fiber orientations in adjacent layers

Ye,

De Guzman,

et al. 2024

Polymer Engineering & Sci

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Compared with commercial polyolefin membranes, electrospun polymeric membranes have the advantages of higher porosity and better electrolyte wettability, but their poor mechanical performance limits their industrial use as battery separators. In this work, a layer‐to‐layer electrospinning is used for fabrication of PVdF@PMMA membranes, in which fibers in adjacent layers are arranged at a certain angle (0°, 30°, 60°, 90°). The as‐electrospun membranes are further hot‐pressed to boost their mechanical strength. Various techniques are employed to evaluate the membranes, such as scanning electron microscopy, differential scanning calorimetry, contact angle measurement, electrochemical impedance spectroscopy, and linear sweep voltammetry. The results show that polymethyl methacrylate partially melts during the hot‐pressing treatment, causing adjacent fibers in the membranes to bridge. The obtained membranes show different tensile strength values with the various angles between fibers. When the angle is 30°, the tensile strength can reach 22.09 MPa and higher porosity (74.68%), greater liquid electrolyte absorption (612.36%) than that of commercial polyolefin membrane are harvested. The lithium‐ion cell assembly with the membrane separator exhibits a discharge capacity reaching 142 mAh g−1 and an excellent capacity retention of 90.7%. This present study provides an innovative and promising approach for the fabrication of high‐performance battery separator by electrospinning.Highlights PVdF@PMMA membranes are prepared by a layer‐to‐layer electrospinning. In the membranes, fiber orientation in adjacent layers is kept at a certain angle. Hot‐pressing further boosts mechanical performance of the membranes. Membranes with different angle of fibers show various mechanical strengths.

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“…Meta-aramid fibers are one kind of high-performance fibers, which have high specific strength, modulus, excellent thermal stability and insulating properties because of their highly oriented hydrogen bonds in the molecular chain. [1][2][3][4] Meta-aramid fibers exist in various forms, including metaaramid filaments, meta-aramid chopped fibers (MACFs) and meta-aramid pulp. [5] With modern papermaking technology, MACFs and meta-aramid pulp can be processed into lightweight, strong, flexible meta-aramid paper with excellent thermal stability and insulation properties.…”

Section: Introductionmentioning

confidence: 99%

Preparation of high breakdown strength meta‐aramid composite paper reinforced by polyphenylene sulfide superfine fiber

Zhao

Yao

Xiong

et al. 2023

Polymer Engineering & Sci

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Meta-aramid paper has been widely used in transformers because of its excellent insulation properties and thermal stability. However, with the rapid development of high-voltage transformers, higher requirements are placed on the breakdown strength of meta-aramid paper. In this study, meta-aramid chopped fibers/polyphenylene sulfide (MACFs/PPS) composite paper was prepared by a combination of wet-copying and hot-rolling technology. Then the microscopic morphology, mechanical properties, crystallization behavior, insulation properties, and thermal stability of the MACFs/PPS composite paper were studied and evaluated. The experimental results showed that the breakdown strength of the MACFs/PPS composite paper was as high as 46.46 kV/ mm, which was 2.7 times higher than the famous Nomex T410 insulating paper. Meanwhile, the MACFs/PPS composite paper presented good mechanical properties and thermal stability. This paper provides a simple and versatile method for the preparation of meta-aramid composite paper with high breakdown strength.

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Pore structure design and optimization of electrospun PMIA nanofiber membrane

Cited by 9 publications

References 59 publications

Polystyrene/Polymethylhydrosiloxane Multiscale Electrospun Nanofiber Membranes for Air Filtration

Polystyrene/Polymethylhydrosiloxane Multiscale Electrospun Nanofiber Membranes for Air Filtration

Mechanically enhanced battery separator prepared by hot‐pressing electrospun polyvinylidene fluoride@polymethyl methacrylate membranes with different fiber orientations in adjacent layers

Preparation of high breakdown strength meta‐aramid composite paper reinforced by polyphenylene sulfide superfine fiber

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