PVDF nanofibers obtained by solution blow spinning with use of a commercial airbrush

Dias, Gabriel C.; Cellet, Thelma S.P.; Santos, Mirian C.; Sanches, Adhemar; Malmonge, Luiz Francisco

doi:10.1007/s10965-019-1731-7

Cited by 22 publications

(34 citation statements)

References 31 publications

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“…Finally, we observe the CF2 angular deformation bands (1070, 872, and 760 cm −1 ) with CH2 angular deformation (838 cm −1 ) are quite different for both samples. [23,24]. The thermal degradation for both samples starts only above 370 • C, which does not influence the desirable process for this type of application (Supplementary Materials, Figure S1).…”

Section: Resultsmentioning

confidence: 99%

PVDF/KNO3 Composite Sub-Microfibers Produced by Solution Blow Spinning as a Hydrophobic Matrix for Fertilizer Delivery System

et al. 2022

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Nutrient supplementation is a common practice in agriculture to increase crop productivity in the field. This supplementation is usually excessive, causing nutrient leaching in periods of rainfall leading to environmental problems. To overcome such issues, many studies have been devoted to developing polymeric matrices for the controlled and continuous release of nutrients, reducing losses, and keeping plants nourished for as long as possible. However, the release mechanism of these matrices is based on water diffusion. They start immediately for swellable polymeric matrices, which is not interesting and also may cause some waste, because the plant only needs nutrition only after the germination process. Here, as proof of concept, we tested a hydrophobic polymeric matrix based on sub-microfibers mats, produced by solution blow spinning, filled with potassium nitrate (KNO3) for the controlled release of nutrients to plants. In this work, we used the polyvinylidene fluoride (PVDF) polymer to produce composite nanofibers containing pure potassium nitrate in the proportion of 10% weight. PVDF/KNO sub-microfibers mats were obtained with 370 nm average diameter and high occurrence of beads. We performed a release test using PVDF/KNO3 mats in a water bath. The release kinetic tests showed an anomalous delivery mechanism, but the composite polymeric fibrous mat showed itself to be a promising alternative to delay the nutrient delivery for the plants.

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Section: Resultsmentioning

confidence: 99%

PVDF/KNO3 Composite Sub-Microfibers Produced by Solution Blow Spinning as a Hydrophobic Matrix for Fertilizer Delivery System

et al. 2022

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“…Addition of TPO decreased viscosity of the solution-blown polymeric jet, which resulted in a decrease in the average fiber diameter from 121.48 to 87.42 nm, with an increase in TPO concentration (w/w) from 1% to 7%, with a simultaneous decrease in porosity from 72% to 64%. Solution blow spinning (SBS), also known as solution blowing, was conducted using a commercial airbrush to generate PVDF nanofibers [ 96 ]. Concentration of 20 wt% in DMF as a solvent, 5 bar of gas pressure, and 20 cm of tip to collector distance (TCD) were the optimized conditions to prepare ultrafine nanofibers with a diameter of ~138 nm.…”

Section: Ultrafine Pvdf Nanofibers For Pm Removalmentioning

confidence: 99%

Ultrafine PVDF Nanofibers for Filtration of Air-Borne Particulate Matters: A Comprehensive Review

Sanyal

Sinha-Ray

2021

Polymers

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The ongoing global pandemic has bestowed high priority uponthe separation of air-borne particulate matters (PMs), aerosols, etc. using nonwoven fibrous materials, especially for face masks as a means of personal protection. Although spunbond or meltblown nonwoven materials are amongst the forerunners for polymer microfiber-based face mask or air filter development in mass scale, relatively new process of nonwoven manufacturing such as electrospinning is gaining a lot of momentum amongst the filter membrane manufacturers for its scalability of nanofiber-based filter membrane fabrication. There are several nanofiber-based face masks developing industries, which claim a very high efficiency in filtration of particulate matters (PM0.1–10) as well as other aerosols for their products. Polyvinylidene fluoride (PVDF), which is commonly known for its use of tactile sensors and energy harvesters, due to its piezoelectric property, is slowly gaining popularity among researchers and developers as an air filter material. Electrospun PVDF nanofibers can be as fine as 50 nm in mass scale, which allows the membrane to have large surface area compared to its volume, enhancing nanofiber–PM interaction. At the same time, the breathability index can be improved through these PVDF nanofiber membranes due to their architectural uniqueness that promotes slip flow around the fibers. The conductive nature of PVDF makes it advantageous as a promising electret filter allowing better capturing of ultrafine particles. This review aims to provide a comprehensive overview of such PVDF nanofiber-based filter membranes and their roles in air filtration, especially its application in filtrate of air-borne PMs.

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“…For atomizing the polymer solution, the air pressure is applied and the distance between the tip of the nozzle and the collector plate is set typically at the range of 30-40 cm [47]. The reduced cost and instant availability are the benefits of airbrushing; there are less parameters in the airbrushing method that obstruct reproducibility [48,49]. Dias et al found the optimum working conditions during fabricating SBS spun PVDF nanofibres as follows: the pressure at 5 bar, a working distance of 20 cm, and a polymer concentration of 20% (w/v) [49].…”

Section: Airbrushing Systemmentioning

confidence: 99%

“…The reduced cost and instant availability are the benefits of airbrushing; there are less parameters in the airbrushing method that obstruct reproducibility [48,49]. Dias et al found the optimum working conditions during fabricating SBS spun PVDF nanofibres as follows: the pressure at 5 bar, a working distance of 20 cm, and a polymer concentration of 20% (w/v) [49]. The porosity of the airbrushed material ranged from 77% to 95%, while the porosity of the nanofibres produced by electrospinning was 67%, and the airbrushed nanofibres were more commercially viable, easier to handle and safer [49].…”

Section: Airbrushing Systemmentioning

confidence: 99%

“…Dias et al found the optimum working conditions during fabricating SBS spun PVDF nanofibres as follows: the pressure at 5 bar, a working distance of 20 cm, and a polymer concentration of 20% (w/v) [49]. The porosity of the airbrushed material ranged from 77% to 95%, while the porosity of the nanofibres produced by electrospinning was 67%, and the airbrushed nanofibres were more commercially viable, easier to handle and safer [49]. Costs are decreased and deposition rates are in the order 10 times higher than electrospinning when a gravityfed or siphon-fed airbrush is used [35].…”

Section: Airbrushing Systemmentioning

confidence: 99%

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Solution Blow Spinning (SBS): A Promising Spinning System for Submicron/Nanofibre Production

Khan

Hassan

2021

TLR

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Submicron/nanofibres possess great potential for application in different areas because of their amazingly high surface area-to-weight ratio. The demand for fabrication of such fibres on a huge scale is increasing with the fast improvement of nanotechnology. Traditionally, nanofibre fabrication methods have intrinsic faults, limiting their application in industry. Solution blow spinning (SBS) is a viable option for producing adaptable and conformable submicron/nanofibre mats on a variety of surfaces. The technique can be employed to produce submicron/ nanofibres with only a simple commercial airbrush, a concentrated polymer solution, and a compressed gas source. It depends on the high velocity of decompressed air that allows the rapid stretching and evaporation of the solvent from a polymeric solution jet at the outlet of the concentric nozzles system. Along with recent advancements, the importance and drawbacks of the solution blow spinning system in comparison to other methods, such as electrospinning and melt blowing, are briefly discussed. Furthermore, the mechanisms of co-axial SBS spinning and micro SBS spinning system for submicron/nanofibre fabrication are also described. Drawbacks and research challenges of SBS are also addressed in this paper.

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PVDF nanofibers obtained by solution blow spinning with use of a commercial airbrush

Cited by 22 publications

References 31 publications

PVDF/KNO3 Composite Sub-Microfibers Produced by Solution Blow Spinning as a Hydrophobic Matrix for Fertilizer Delivery System

PVDF/KNO3 Composite Sub-Microfibers Produced by Solution Blow Spinning as a Hydrophobic Matrix for Fertilizer Delivery System

Ultrafine PVDF Nanofibers for Filtration of Air-Borne Particulate Matters: A Comprehensive Review

Solution Blow Spinning (SBS): A Promising Spinning System for Submicron/Nanofibre Production

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