Effect of Voltage and Distance on Synthesis of Boehmite Nanofibers with PVP by the Electrospinning Method

Sharifi, Leila; Assa, Farnaz; Ajamein, Hossein; Mirhosseini, S. H.

doi:10.14257/ijast.2017.98.06

Cited by 6 publications

(5 citation statements)

References 23 publications

(23 reference statements)

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“…However, most methods are based on chemical reactions of aluminum acetate, aluminum nitrate or aluminum chloride and others as an alumina precursor. [7][8][9] The principle of production consists in a chemical reaction, the formation of boehmite AlO(OH) from alumina precursors and the subsequent heat-treatment of the product, which leads to the synthesis of -Al2O3 and the gradual transition to high-temperature modification of -Al2O3 with increasing temperature. [10] A significant part of the production also belongs to amorphous SiO2 nanofibers produced from the TEOS precursor.…”

Section: Composite Modifiable Nanofibersmentioning

confidence: 99%

“…The influence of voltage, collector working distance, needle diameter, solution flow rate, viscosity and concentration of precursors was determined. [9,10] For the production of nanofibers from various inorganic precursors, it is necessary to add polymers to the basic spinning solution. High molecular weight polymers such as PVB, PVP, PVA and PEO are most often used.…”

Section: Electrospinningmentioning

confidence: 99%

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The mullite nanofibers for electrotechnical applications

Kočí

Míka

Klusoňová

2022

J. Phys.: Conf. Ser.

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This paper is focused on the development and modification of inorganic refractory nanofibers for advanced applications, made from the most available ceramic raw materials (Al2O3 and SiO2) in the right proportion for crystallization of mullite, commonly used high-temperature material. The intention is to create a modifiable refractory material for use in electrotechnical applications as electrodes, separators, or a solid electrolyte in a new type of safe solid-state batteries. For these reasons, the nanofibers are modified with different conductive materials, for example different types of spinels. Spinels with the formula AB2O4, specifically CuCr2O4, have been studied due to their significant electrical and magnetic properties, that are suitable for their intended purposes.

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Section: Composite Modifiable Nanofibersmentioning

confidence: 99%

Section: Electrospinningmentioning

confidence: 99%

The mullite nanofibers for electrotechnical applications

Kočí

Míka

Klusoňová

2022

J. Phys.: Conf. Ser.

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“…From these images, then the diameter size distribution of nanofibers was determined by software analysis of ImageJ as well as the mean diameter and the deviation standard. increasing of the nanofiber diameter because the charge is not enough to pull the material [14]. While, the voltage above 12 kV makes the diameter of nanofiber product thicker at 15kV because at this voltage raise the time consumption of the precursor released from spinneret to collector [15].…”

Section: Fig 2 High Pressure Liquid Chromatography Of Bassela Rubra L...mentioning

confidence: 99%

“…The figure indicates that operating condition of electrospinning process at the voltage of 12 kV gives the best result in the diameter size and size distribution which is indicated by the smallest particle size and standard deviation of 246.3 nm and 99.2 respectively. Operation under this optimum voltage resultsincreasing of the nanofiber diameter because the charge is not enough to pull the material[14]. While, the voltage above 12 kV makes the diameter of nanofiber product thicker at 15kV because at this voltage raise the time consumption of the precursor released from spinneret to collector[15].…”

mentioning

confidence: 99%

Correlation of Extract Composition on Antioxidant Activity of Electrospun PolyvinylPyrrolidone/<i>Bassela rubra linn</i> Leaf Extract Composite

Septiani

Gabriel

Prastuti

et al. 2020

KEM

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Nanofiber through electrospinning process has been developed as a promising material for wound dressing due to its large porosity and high surface area. This characteristic of nanofiber provides an adequate gas permeability surrounding the wound which prevents the healing failure. The best wound dressing not only maintain a wound to have a good gas permeability but also to have an active agent giving an antibacterial and antiinflammation property. This research aims to combine a synthetic polymer and active agent, polyvinylpyrrolidone (PVP) and Bassela rubra linn leaf extract (BRLE), become nanofibrous material. The electrospinning process was conducted in two steps. The first step is to obtain the best voltage of PVP electrospinning by using the voltage of 10, 12, 15, 17 kV. The other step is combining PVP to 2%, 5%, 8% of BRLE. The first step shows the best operation condition is using 12 kV. Hence, it is used to obtain nanofiber with different BRLE percentage. Based on 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, the result indicates that increase the BRLE composition will rise the antioxidant activity because of the smaller diameter size.

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“…Many low-cost synthesis routes are known instead of expensive melting techniques to produce aluminum oxide fibers: precipitation [12][13][14][15], sol gel [16][17][18], hydrothermal [19], and CVD methods [20].…”

Section: Introductionmentioning

confidence: 99%

Porous aluminum oxide insulation materials tested in space mission

Ádám

Dudás

Temesi³

et al. 2022

CEAS Space J

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The eventual aim of this research work was to develop a new low-cost synthesis route to produce ultralight aluminum oxide ceramic fibers for high temperature insulation. This paper mainly focuses on the application of Al2O3 fibers as insulation materials in space vehicles. The study extended to check the fibers during the launch and in the conditions of space by a satellite test. The materials were monitored by thermo-vacuum and vibration tests before the launch. The long-term stability, the daily maximum and minimum temperature, and the temperature fluctuation were investigated in the satellite test. The data derived from satellite was collected in about 9 months. The other focus of this study was the characterization of fibers at high temperature. Al2O3 fibers were prepared by a new solution method and electrospinning technique. The developed Al2O3 fibers can be characterized by 0.035–0.037 W⋅mK−1 thermal conductivity, excellent heat resistance (up to 1600 °C), and good flexibility.

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Effect of Voltage and Distance on Synthesis of Boehmite Nanofibers with PVP by the Electrospinning Method

Abstract: Abstract

Cited by 6 publications

References 23 publications

The mullite nanofibers for electrotechnical applications

The mullite nanofibers for electrotechnical applications

Correlation of Extract Composition on Antioxidant Activity of Electrospun PolyvinylPyrrolidone/<i>Bassela rubra linn</i> Leaf Extract Composite

Porous aluminum oxide insulation materials tested in space mission

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