Study on a novel PTFE membrane with regular geometric pore structures fabricated by near-field electrospinning, and its applications

Cheng, Jinxue; Huang, Qinglin; Huang, Yan; Luo, Wei; Hu, Quan; Xiao, Changfa

doi:10.1016/j.memsci.2020.118014

Cited by 38 publications

(13 citation statements)

References 22 publications

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“…186 Huang and coworkers subsequently employed the same system in near-field-ES (NFES) from dispersion to 3D-print micro-meshes for effective aqueous SiO 2 particle filtration. 187…”

Section: Dispersion Electrospinningmentioning

confidence: 99%

Electrospinning based on benign solvents: current definitions, implications and strategies

et al. 2022

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“…186 Huang and coworkers subsequently employed the same system in near-field-ES (NFES) from dispersion to 3D-print micro-meshes for effective aqueous SiO 2 particle filtration. 187…”

Section: Dispersion Electrospinningmentioning

confidence: 99%

Electrospinning based on benign solvents: current definitions, implications and strategies

et al. 2022

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“…Another example of PVA blends was in 2020, Cheng et al NFES manufactured a 10 wt % PVA in water solution emulsified with polytetrafluoroethylene (PTFE) with an unreported amount of boric acid for the creation of tailorable scaffolds [ 52 , 53 ]. PTFE/PVA ratios (4:1–10:1), sintering temperatures (280–430 °C), and scaffold geometries were explored while holding air gap (4 cm), applied voltage (2.85 kV), and polymer flow rate (4.2 µL/min) constant (nozzle dimensions not reported).…”

Section: Fiber Writing Of Biomedical Polymersmentioning

confidence: 99%

Near-Field Electrospinning and Melt Electrowriting of Biomedical Polymers—Progress and Limitations

King

Bowlin

2021

Polymers

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Near-field electrospinning (NFES) and melt electrowriting (MEW) are the process of extruding a fiber due to the force exerted by an electric field and collecting the fiber before bending instabilities occur. When paired with precise relative motion between the polymer source and the collector, a fiber can be directly written as dictated by preprogrammed geometry. As a result, this precise fiber control results in another dimension of scaffold tailorability for biomedical applications. In this review, biomedically relevant polymers that to date have manufactured fibers by NFES/MEW are explored and the present limitations in direct fiber writing of standardization in published setup details, fiber write throughput, and increased ease in the creation of complex scaffold geometries are discussed.

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“…Generally speaking, the PTFE membranes are produced by the biaxial stretching method. Through this process, however, it is difficult to control pore size and geometry (Cheng et al, 2020). PTFE hollow fiber membranes can be obtained from paste extrusion followed by stretching and sintering.…”

Section: Polytetrafluoroethylenementioning

confidence: 99%

“…In this case, an alternative that has proven to be attractive for the manufacture of PTFE fibers is the use of near-field electrospinning (NFES). Through it, layers of nanomaterials are superimposed on top of one another, on a flat substrate, under the action of an electric field (Chang et al, 2008;Cheng et al, 2020). In their studies related to the development of PTFE membranes for separating water/oil, Cheng et al (2020) obtained porous structures with various geometries.…”

Section: Polytetrafluoroethylenementioning

confidence: 99%

“…Through it, layers of nanomaterials are superimposed on top of one another, on a flat substrate, under the action of an electric field (Chang et al, 2008;Cheng et al, 2020). In their studies related to the development of PTFE membranes for separating water/oil, Cheng et al (2020) obtained porous structures with various geometries. Figure 1 shows the different geometries generated by the NFES process and a membrane obtained through the method.…”

Section: Polytetrafluoroethylenementioning

confidence: 99%

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Polymer Applications for Medical Care in the COVID-19 Pandemic Crisis: Will We Still Speak Ill of These Materials?

Corrêa

2020

Front. Mater.

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As consumption and use increased, the accumulation of urban waste of polymeric origin drew the attention of several sectors, especially that of the organized civil society. Through mobilizations and activism, environmental became more restricted regarding the use and disposal of polymer materials. Plastic bags, tires, disposable cups, plastic straws, PET bottles are some examples of how polymers have had a negative impact to the environment generating pressures around the world to rethink their uses. However, the pandemic crisis that emerged in January, 2020 has reinforced the importance of polymers for contemporary society. If, in the past, consumerism was the driving force behind the application of polymers, nowadays health and medical emergencies are the new forces. The reduction in stocks of medical-hospital supplies and personal protective equipment for health professionals and for the general public caused by the pandemic led to the emergence of alternative production movements based on polymers. Because of those alternatives, which have helped a lot to save and preserve lives, the present work aims to highlight the types of polymers most used during this pandemic period, such as polycarbonate (PC), poly(ethylene terephthalate) (PET) and polypropylene (PP). For this purpose, scientific articles related to the production of masks and other devices having some type of polymer as raw material were analyzed. The present research was based on the first half of 2020, highlighting the countries, the polymer used, and the final product it is intended to.

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Study on a novel PTFE membrane with regular geometric pore structures fabricated by near-field electrospinning, and its applications

Cited by 38 publications

References 22 publications

Electrospinning based on benign solvents: current definitions, implications and strategies

Electrospinning based on benign solvents: current definitions, implications and strategies

Near-Field Electrospinning and Melt Electrowriting of Biomedical Polymers—Progress and Limitations

Polymer Applications for Medical Care in the COVID-19 Pandemic Crisis: Will We Still Speak Ill of These Materials?

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