High-Throughput Free Surface Electrospinning Using Solution Reservoirs with Different Depths and Its Preparation Mechanism Study

2021 ◽  
Author(s):  
Jing Yin ◽  
Adnan Ahmed ◽  
Lan Xu
Keyword(s):  
Free Surface ◽  
High Throughput ◽  
Mechanism Study ◽  
Free Surface Electrospinning ◽  
Different Depths

scholarly journals High-throughput free surface electrospinning using solution reservoirs with different depths and its preparation mechanism study

2020 ◽  
Author(s):  
Jing Yin ◽  
Adnan Ahmed ◽  
Lan Xu
Keyword(s):  
Free Surface ◽  
High Throughput ◽  
High Speed ◽  
Mechanism Study ◽  
Free Surface Electrospinning ◽  
Different Depths ◽  
Simulation Results ◽  
Rsm Model ◽  
Scanning Electron

This paper presented a self-made spherical section free surface electrospinning (SSFSE) using solution reservoirs with different depths for obtaining high-throughput production of nanofibers, and studied its preparation mechanism. The effects of the solution reservoir depth on the SSFSE process as well as the quality and yield of polyacrylonitrile (PAN) nanofibers were investigated experimentally using high-speed camera, precise electronic balance and scanning electron microscopy, and were analyzed theoretically by response surface methodology (RSM) and numerical simulation. The values predicted by the established RSM model and the electric field simulation results obtained by Maxwell 3D were all consistent with the experimental data, which showed that the solution reservoir depth had little effects on the quality of PAN nanofibers, but had great effects on the yields of them. When the maximum depth of solution reservoir was 4.29 mm, the PAN nanofibers prepared have the best quality and the highest yields.

High-throughput Fabrication of Chitosan/Poly(ethylene oxide) Nanofibers by Modified Free Surface Electrospinning

2020 ◽  
Vol 21 (9) ◽  
pp. 1945-1955 ◽  
Author(s):  
Adnan Ahmed ◽  
Lan Xu ◽  
Jing Yin ◽  
Mingdi Wang ◽  
Fawad Khan ◽  
...  
Keyword(s):  
Free Surface ◽  
Ethylene Oxide ◽  
High Throughput ◽  
Free Surface Electrospinning ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

scholarly journals Four self-made free surface electrospinning devices for high-throughput preparation of quality nanofibers

2019 ◽  
Author(s):  
Yue Fang ◽  
Lan Xu
Keyword(s):  
Experimental Data ◽  
Free Surface ◽  
Electric Field ◽  
High Throughput ◽  
Applied Voltage ◽  
Electric Field Distribution ◽  
High Quality ◽  
Oblique Section ◽  
Free Surface Electrospinning ◽  
Simulation Results

Four different self-made free surface electrospinning (FSE) devices, namely, modified bubble-electorspinning (MBE) device, modified free surface electorspinning (MFSE) device, oblique section free surface electorspinning (OSFSE) device and spherical section free surface electrospinning (SSFSE) device, were presented to obtain high-throughput preparation of high quality nanofibers in this paper. The preparation mechanisms of these four FSE device were studied by simulating the electric field distribution using Maxwell 3D, due to the importance of electric field in the FSE process. And the effects of them on the morphology and yield of nanofibers were investigated by experiments. The experimental data agreed with the simulation results of electric field, and showed these four FSE device all could be used to prepare high quality nanofibers in large quantities. Meanwhile, comparing the spinning effects of these four FSE device, the results illustrated the SSFSE device was the optimal FSE device because of the highest quality and yield of nanofibers, and its yield could reach 20.03 g/h at the applied voltage of 40 kV.

scholarly journals Four self-made free surface electrospinning devices for high-throughput preparation of high-quality nanofibers

2019 ◽  
Vol 10 ◽  
pp. 2261-2274 ◽  
Author(s):  
Yue Fang ◽  
Lan Xu
Keyword(s):  
Experimental Data ◽  
Free Surface ◽  
Electric Field ◽  
High Throughput ◽  
Applied Voltage ◽  
Electric Field Distribution ◽  
High Quality ◽  
Oblique Section ◽  
Free Surface Electrospinning ◽  
3D Software

Four different self-made free surface electrospinning (FSE) techniques, namely, modified bubble-electrospinning (MBE), modified free surface electrospinning (MFSE), oblique section free surface electrospinning (OSFSE) and spherical section free surface electrospinning (SSFSE), designed for high-throughput preparation of high-quality nanofibers, are presented in this paper. The mechanisms of fiber preparation of the corresponding four FSE devices were studied by simulating the electric field distribution using the Maxwell 3D software. The properties of the electric field in the device are very important for the FSE process. The effects of the particular technique on the morphology and the yield of nanofibers were experimentally investigated. The experimental data agree well with the results of the simulations and show that all four FSE devices can be used to prepare large quantities of high-quality nanofibers. A comparison of the spinning mechanisms of these four FSE devices illustrates that the SSFSE device performs best, providing the highest quality and yield of nanofibers. The SSFE device could yield 20.03 g/h of nanofibers at an applied voltage of 40 kV.

Fluid Structure Interaction Simulations Involving Free Surface

2018 ◽  
Author(s):  
H. R. Díaz-Ojeda ◽  
L. M. González ◽  
F. J. Huera-Huarte
Keyword(s):  
Free Surface ◽  
Circular Cylinder ◽  
Fluid Structure Interaction ◽  
Flexible Structure ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Classical Fluid ◽  
Simple Geometry ◽  
Different Depths

The aim of this paper is to evaluate how much affects the presence of gravity and free-surface to a flexible structure in a classical fluid structure interaction (FSI) problem typically found in off-shore problems and other oceanic applications. The base problem selected is the Turek benchmark case where a deformable plate is attached to the wake of a circular cylinder. To focus on the differences of considering free surface, a simple geometry has been selected and two different situations have been studied: the first one is the classical Turek benchmark, the second is a similar geometry but adding gravity and free surface. The free surface problem was studied placing the structure at different depths and monitoring the deformation and forces on the structure.

Large-scale preparation of micro-gradient structured sub-micro fibrous membranes with narrow diameter distributions for high-efficiency air purification

2019 ◽  
Vol 6 (12) ◽  
pp. 3560-3578 ◽  
Author(s):  
Mengjuan Zhou ◽  
Mengzhen Fang ◽  
Zhenzhen Quan ◽  
Hongnan Zhang ◽  
Xiaohong Qin ◽  
...  
Keyword(s):  
Free Surface ◽  
Large Scale ◽  
High Efficiency ◽  
Air Purification ◽  
Air Filters ◽  
Large Scale Preparation ◽  
Free Surface Electrospinning ◽  
One Step ◽  
Scale Preparation ◽  
Fibrous Membranes

Micro-gradient structured PAN sub-micro fibrous membrane with high-efficiency air purification performance was fabricated via one-step free surface electrospinning with large-scale yield, firstly demonstrated as air filters.

Characterisation of morphological, antimicrobial and leaching properties of in situ prepared polyurethane nanofibres doped with silver behenate

RSC Advances ◽  
2016 ◽  
Vol 6 (28) ◽  
pp. 23816-23826 ◽  
Author(s):  
Jan Dolina ◽  
Lukáš Dvořák ◽  
Tomáš Lederer ◽  
Taťana Vacková ◽  
Šárka Mikmeková ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Free Surface ◽  
Antimicrobial Properties ◽  
Post Treatment ◽  
Free Surface Electrospinning

PU nanofibersin situdoped with silver nanoparticles were prepared using free-surface electrospinning and no post-treatment. Nanofibres with silver behenate exhibited homogenous morphology, strong antimicrobial properties and low silver leaching.

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