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Electrospinning Equipment: Metal-Wire Needle-Free Electrospun Polyimide Nanofibers for Efficient High-Temperature PM₀.₃ Filtration

Electrospinning Equipment: Metal-Wire Needle-Free Electrospun Polyimide Nanofibers for Efficient High-Temperature PM₀.₃ Filtration 2025-03-25

In this study, researchers from South China University of Technology developed fine - diameter polyimide (PI) nanofiber membranes via a metal wire - based needle - free electrospinning machine technique. By adjusting the voltage from 60 kV to 80 kV in the electrospinning device, an average fiber diameter of 122 nm was achieved. These membranes showed a remarkable PM0.3 filtration efficiency of 99.99% and a low air flow resistance of 189.18 Pa. They maintained a PM0.3 filtration efficiency of 99.96% even after 5 - hour high - temperature treatment at 390 °C, demonstrating excellent thermal stability. With a hydrophobic contact angle of 130°±3°, the membranes are suitable for high - temperature particulate matter filtration, providing a new solution for industrial applications. However, the tensile stress of 6.355 MPa indicates that mechanical properties need further optimization.

Electrospinning Equipment: Polymer-less Electrospinning of Silica Nanofiber Membranes for High Safety Lithium Ion Battery Separators

Electrospinning Equipment: Polymer-less Electrospinning of Silica Nanofiber Membranes for High Safety Lithium Ion Battery Separators 2025-03-25

This paper first reports the synthesis of a fully silica membrane by polymer - free electrospinning with an electrospinning machine. Eliminating the carrier polymer simplifies the process. The separator shows high temperature resistance, with 89% porosity, 3.59 mS/cm ionic conductivity, and 1566% electrolyte uptake. In a lithium - ion battery half - cell with an LFP cathode, at 1C, the PSN separator has a 90 mAh/g specific capacity, 28% higher than PP. The preparation is simple, cost - effective, and scalable. This membrane is a promising separator for high - safety LIBs and helps realize all - electrospun batteries.
Electrospinning Equipment: Scalable PEI/AOPAN Composite Nanofiber Membrane for Efficient Cr(VI) Removal in Wastewater

Electrospinning Equipment: Scalable PEI/AOPAN Composite Nanofiber Membrane for Efficient Cr(VI) Removal in Wastewater 2025-03-21

This study addresses heavy metal ion wastewater treatment using a scalable PEI/AOPAN composite nanofiber membrane made via needleless electrospinning and chemical modification. The membrane shows good fiber structure, hydrophilicity, and mechanical properties. It achieves a flux of 1146 L·m⁻²·h⁻¹ and 99.53% rejection rate for 100 mg/L Cr(VI) ions under 0.08 MPa pressure, following pseudo - first - order kinetics and Langmuir isotherm models.

Electrospinning Equipment: Coaxial Electrospun Nanofiber Membranes for Oil-Water Separation

Electrospinning Equipment: Coaxial Electrospun Nanofiber Membranes for Oil-Water Separation 2025-03-21

Poly(vinylidene fluoride) (PVDF) nanofiber membranes with multi-scale microporous channel structures were prepared via coaxial electrospinning and a sacrificial template strategy. Iron phytate nanoparticles were in situ grown on the fibers to fill the porous structures, creating an interlocking structure that significantly enhanced the stability and durability of the membrane. The modified membrane exhibited exceptional superhydrophilicity and underwater superoleophobicity, achieving over 99% separation efficiency for various oil-in-water emulsions and high water flux. Additionally, it demonstrated excellent resistance to crude oil contamination and adsorption capability for cationic dyes. This study provides new insights for developing high-performance and durable oil–water separation membranes.

Electrospinning Equipment:Electrospun PAN/PEG/Gd₂O₃ Composite Electrolytes for Enhanced Energy Storage

Electrospinning Equipment:Electrospun PAN/PEG/Gd₂O₃ Composite Electrolytes for Enhanced Energy Storage 2025-03-20

This study explores the development of high-performance solid polymer electrolytes (SPEs) for lithium-ion batteries, addressing the safety and performance limitations of traditional liquid electrolytes. Using electrospinning technology, we fabricated composite nanofiber electrolytes from poly(acrylonitrile) (PAN) and poly(ethylene glycol) (PEG), doped with gadolinium oxide (Gd₂O₃). The Gd₂O₃ nanoparticles were synthesized via the sol–gel method and incorporated into the polymer matrix at various weight ratios. The resulting electrolyte membranes exhibited enhanced mechanical properties, thermal stability, and significantly improved ionic conductivity. Specifically, the PAN/PEG/LiTFSI/Gd₂O₃ membrane with 15% Gd₂O₃ achieved an ionic conductivity of 1.026×10⁻⁴ S cm⁻¹ at room temperature, a wide electrochemical stability window of 5.5 V, and a high lithium-ion transference number of 0.83. These findings suggest that Gd₂O₃-modified SPEs hold promise for future solid-state lithium batteries.
Electrospinning Equipment: New Method for Pore Optimization and Hydrophilic Modification of PTFE Nanofiber Membrane

Electrospinning Equipment: New Method for Pore Optimization and Hydrophilic Modification of PTFE Nanofiber Membrane 2025-03-20

In the field of membrane separation for wastewater treatment, polytetrafluoroethylene (PTFE) nanofiber membranes have great potential due to their high stability. However, challenges like pore structure control and hydrophobicity limit their application. This study presents an innovative approach. By adjusting the mass ratio of PEO and PTFE in electrospinning and subsequent acetalization with PVA, the pore size is reduced from 288.5 nm to 161.3 nm, and the water contact angle decreases from 135.7° to 50.9°. The modified membrane shows a significant increase in water flux, reaching 1056.16 L·m⁻²·h⁻¹, and high rejection rates for carbon (99.3%) and SiO₂ (97.3%) particles. Moreover, it exhibits excellent hydrophilic stability in harsh environments and after friction, making it a promising option for wastewater treatment applications.
Electrospinning Equipment: Critical Review-Nanofibre Polymeric Membranes for Oily Wastewater Treatment

Electrospinning Equipment: Critical Review-Nanofibre Polymeric Membranes for Oily Wastewater Treatment 2025-03-19

With the rapid development of industrialization and urbanization, oily wastewater has become a serious environmental problem. Traditional treatment methods are ineffective in removing emulsified and dissolved oil. Electrospinning technology, due to its high separation performance, has emerged as a promising solution. This article first elaborates on the sources and hazards of oily wastewater. Then it details the application of membrane technology in its treatment, especially the use of UF and NF membranes. It also compares two main preparation methods of nanofiber polymer membranes, the phase inversion method and electrospinning method, with the latter showing unique advantages. Moreover, it discusses how to optimize the performance of nanofiber membranes in oily wastewater treatment from aspects like material selection and surface property regulation. Overall, electrospinning technology holds great potential for efficiently treating oily wastewater and protecting the environment.
Electrospinning Equipment: Electrospun TiO 2 ​ /NiO Nanofibers for Acetaminophen Degradation

Electrospinning Equipment: Electrospun TiO 2 ​ /NiO Nanofibers for Acetaminophen Degradation 2025-03-19

This study focuses on addressing the global issue of pharmaceutical residues in water, such as acetaminophen. By combining the sol - gel method with electrospinning technology, NiO−TiO2 nanofibers were innovatively prepared. After optimization by 500 °C calcination, the 5 wt% NiO−TiO2​nanofibers demonstrated remarkable performance, achieving a 98.8% degradation rate of acetaminophen within 4 hours under visible light, nearly doubling that of pure TiO2. DFT calculations were employed to reveal the mechanism of NiO promoting charge separation, and cycling experiments verified the excellent stability and reusability of the material. This research not only provides a new high - efficiency photocatalytic material for water pollution treatment but also offers important references for designing novel composite photocatalysts, thus opening up new possibilities in the field of photocatalysis for environmental remediation.
Electrospinning Equipment: Silver Nanofiber Membranes for Indoor Air Pollution Treatment

Electrospinning Equipment: Silver Nanofiber Membranes for Indoor Air Pollution Treatment 2025-03-18

This article discusses the development and application of silver nanofiber membranes as a novel solution for air pollution control. Fabricated using electrospinning technology, these membranes integrate silver nanoparticles (AgNPs) into a polymer matrix, offering high filtration efficiency and antibacterial properties. The study highlights the antibacterial mechanisms of AgNPs, which disrupt bacterial cell membranes and induce oxidative stress, leading to microbial death. Experiments demonstrate that the filtration efficiency of silver nanofiber membranes significantly increases with higher AgNP content, achieving maximum antibacterial and antifungal efficiencies of 98.33% and 99.86%, respectively. The membranes maintain high performance even under high microbial loads, showcasing their stability and reliability.
Electrospinning Equipment: Enhancing Epoxy Molding Compounds' Thermal Conductivity with SiO₂-Embedded Carbon Nanofibers

Electrospinning Equipment: Enhancing Epoxy Molding Compounds' Thermal Conductivity with SiO₂-Embedded Carbon Nanofibers 2025-03-18

With the development of AI, IoT, and high - performance computing, semiconductor chips face increasing performance demands. However, heat dissipation due to miniaturization and high integration restricts their progress. A study in Macromolecular Research proposes an innovative approach. By adding SiO₂ - embedded carbon nanofibers (SiO₂/eCNFs) to epoxy molding compounds (EMC), the thermal conductivity and mechanical properties of EMC are significantly enhanced. Researchers prepared SiO₂ nanoparticles of different sizes, added them to PAN nanofiber precursor solutions, and obtained SiO₂/eCNFs through electrospinning and carbonization. When 0.4 wt% of 500SiO₂/eCNFs was added to EMC, the thermal conductivity increased by 67% and the impact strength by 43%. This new additive shows great potential for semiconductor packaging thermal management.
Electrospinning Equipment: Carbon Nanoparticle-Loaded PLA Nanofibers for Food Packaging

Electrospinning Equipment: Carbon Nanoparticle-Loaded PLA Nanofibers for Food Packaging 2025-03-17

A joint research team from the University of Turin, Italy, and the Universitat Politècnica de València, Spain, developed polylactic acid (PLA) nanofibers loaded with carbon nanoparticles (CNP) and copper - modified carbon nanoparticles (CNP - Cu) via electrospinning for food packaging. By optimizing process parameters, they achieved uniform nanoparticle distribution in fibers. The 1% CNP - Cu - containing PLA fibers showed significant antibacterial effects against foodborne pathogens and enhanced mechanical properties. Migration tests in food simulants demonstrated nanoparticle release below the detection limit and copper ion migration far lower than EU standards. As PLA is from renewable resources and carbon nanoparticles are hydrothermally synthesized from glucose, it's a green technology. A UV - spectroscopy - based detection method was developed for production monitoring. Now in the pilot verification stage, it's expected to be applied in various food packaging scenarios.
Electrospinning Equipment: Charge Traits & High - Humidity Use of Co-electrospun Nanofiber Membranes

Electrospinning Equipment: Charge Traits & High - Humidity Use of Co-electrospun Nanofiber Membranes 2025-03-17

This study aims to boost the charge density and stability of co - electrospun nanofiber membranes (ENAFs) for enhanced air filtration. Through electrospinning with selected polymers from the triboelectric series, ENAFs were prepared. The charge characteristics, filtration efficiency, and performance in high - humidity environments were investigated. The polarity of single - polymer nanofibers varies due to material properties. Co - electrospun membranes show enhanced charge and higher filtration efficiency. A hydrophilic fiber layer (HFL) was developed to protect ENAFs in high - humidity. HFL effectively preserves charges and filtration efficiency, with some impact on pressure drop and also providing a humidity - indicating function. The research offers valuable insights for practical air - filtration applications of nanofiber membranes.
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