Microfluidic nozzle device for ultrafine fiber solution blow spinning with precise diameter control

Lab on a Chip ◽  
2018 ◽  
Vol 18 (15) ◽  
pp. 2225-2234 ◽  
Author(s):  
Eddie Hofmann ◽  
Kilian Krüger ◽  
Christian Haynl ◽  
Thomas Scheibel ◽  
Martin Trebbin ◽  
...  
Keyword(s):  
Continuous Solution ◽  
Ultrafine Fibers ◽  
Ultrafine Fiber ◽  
Solution Blow Spinning ◽  
Diameter Control

We present a microfluidic nozzle device for the controlled continuous solution blow spinning of ultrafine fibers.

Preparation of Polytetrafluoroethylene Ultrafine Fiber Mats with Electrospinning Process

2011 ◽  
Vol 675-677 ◽  
pp. 827-830 ◽  
Author(s):  
Si Jun Zhu ◽  
Yuan Yuan Zhou ◽  
Ochi Takashi ◽  
Gang Wu
Keyword(s):  
Heat Treatment ◽  
Fourier Transform ◽  
Electrospinning Process ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Poly Vinyl Alcohol ◽  
Mass Ratio ◽  
Fiber Mats ◽  
Ultrafine Fibers ◽  
Ultrafine Fiber

Polytetrafluoroethylene (PTFE) ultrafine fibers mats were prepared by electrospinning of an aqueous PTFE dispersion and a small amount of poly(vinyl alcohol) (PVA) and subsequent heat-treatment. The influence of dispersions composition on the morphology of fabricated PTFE ultrafine fiber mats was investigated. The fabricated mats were characterized by attenuated total reflection-Fourier transform infrared (ATR-FTIR) and koniology tester. The results show that the PVA/PTFE mass ratio of 1:5 was suitable for the PTFE fibers formation. All the PVA in the electrospun PVA/PTFE mats was removed at 350 °C~390°C. The fabricated PTFE ultrafine fiber mats have the potential to be used as high-temperature filter.

scholarly journals Mass Production of Ultrafine Fibers by a Versatile Solution Blow Spinning Method

2021 ◽  
Author(s):  
Chao Jia ◽  
Lei Li ◽  
Jianan Song ◽  
Ziwei Li ◽  
Hui Wu
Keyword(s):  
Mass Production ◽  
Ultrafine Fibers ◽  
Solution Blow Spinning

Electrospinning Using Solution of Waste Polyacrylonitrile

2014 ◽  
Vol 1065-1069 ◽  
pp. 3136-3139
Author(s):  
Chun Xue Zhang ◽  
Bo Sun
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Fiber Diameter ◽  
Electrospun Fibers ◽  
Fiber Structure ◽  
Ultrafine Fibers ◽  
Ultrafine Fiber ◽  
Dimethylformamide Solution ◽  
Scanning Electron

Polyacrylonitrile (PAN) ultrafine fiber was prepared by electrospinning of PAN solution made from waste PAN. Diameters of the electrospun fibers as well as distribution of them were characterized by scanning electron microscope. The results show that the waste polyacrylonitrile/ N,N-dimethylformamide solution can be used for electrospinning after simply treatment-filtration. Uniform ultrafine fibers with diameters between 100 nm and 250nm could be obtained. With increasing concentration of waste PAN from 9% to 10%, the morphology was changed from beaded fiber to uniform fiber structure and the fiber diameter was also increased from110nm to 184 nm gradually. A narrow distribution of fiber diameters was observed at a voltage of 22kV. However, more beaded fibers were observed for longer tip–collecting foil distance.

Electrically Conductive Ultrafine Fibers of PVA-PEDOT/PSS and PVA-AgNPs by Means of Electrospinning

2014 ◽  
Vol 1033-1034 ◽  
pp. 1024-1035 ◽  
Author(s):  
Prasit Pisesweerayos ◽  
Somsak Dangtip ◽  
Pitt Supaphol ◽  
Toemsak Srikhirin
Keyword(s):  
Conductive Polymer ◽  
Metal Nanoparticle ◽  
Polymer Fibers ◽  
Polymeric Fibers ◽  
Electrically Conductive ◽  
Fiber Mats ◽  
Ultrafine Fibers ◽  
Ultrafine Fiber ◽  
The Creation ◽  
Fiber Sample

This research project produced two fabricated ultrafine conductive polymeric fibers. The first fiber was fabricated from a polymer and conductive polymer solution, and the second was fabricated from a polymer and metal nanoparticle/ nanocomposite. The resulting fibers were characterized and analyzed. For all fiber samples, the ultrafine polymeric fibers were fabricated using polyvinyl alcohol (PVA). The conductive polymer used in the first fiber sample was poly (3,4-ethylenedioxythiophene)/ polystyrene sulfonate (PEDOT/PSS). The conductive nanoparticles used in the second fiber sample were silver nanoparticles (AgNPs). The ultrafine conductive polymer fibers and the ultrafine conductive nanoparticle fibers were fabricated using an electrospining process. During the fabrication process of each fiber sample, different concentrations of either PEDOT/PSS, for fiber sample one, or AgNPs, for fiber sample two, were combined in PVA solution. Using optimal conditions, ultrafine fibers were fabricated at intervals of 5 min for the creation of random fibers, and intervals of 20 min for the creation of aligned fiber mats. The resulting fibers ranged from 0.1 μm to 0.2 μm in diameter. After characterization and analysis of the conductive ultrafine polymeric fibers, using either the PVA:PEDOT/PSS compound or the PVA:AgNPs compound, both samples produced greater conductive capacities with greater concentrations of solution. For the random fiber samples, the conductive capacity was sporadic. However, the ultrafine fiber mats (PVA:AgNPs) supported a capacity from 3.64 S/cm to 10.64 S/cm, and the PVA:PEDOT/PSS ultrafine fiber mats supported a capacity from 4.49 S/cm to 7.08 S/cm.

Preparation and Characteristics of Electrospun Silver-Containing PHBV Ultrafine Fiber

2014 ◽  
Vol 548-549 ◽  
pp. 34-37 ◽  
Author(s):  
Ming Hua Min ◽  
Yu Yuan Shi ◽  
Xiao Xue Chen ◽  
Jian Gao Shi ◽  
Hai You Ma ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Silver Nanoparticles ◽  
Average Diameter ◽  
Gravimetric Analysis ◽  
Thermal Gravimetric ◽  
Scanning Calorimetry ◽  
Ultrafine Fibers ◽  
Ultrafine Fiber ◽  
Thermal Stability Of ◽  
Scanning Electron

The effects of synthesized silver nanoparticles on electrospun PHBV ultrafine fibers were studied by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and thermal gravimetric analysis (TGA). Addition of silver nanoparticles increased from 0.1% to 2.0%, the sooth ultrafine fiber with an average diameter of about 2 μm formed a non-woven mat was obtained. DSC showed the efficient heterogeneous nucleation by the silver nanoparticles for facilitating PHBV crystallization.The thermal stability of the PHBV/Ag ultrafine fibers improved with the increase in the content of the silver nanoparticles.

Gluing Solutions

2017 ◽  
Author(s):  
Philip Isett
Keyword(s):  
Stress Tensor ◽  
Compact Support ◽  
Smooth Solution ◽  
Continuous Solution ◽  
Total Momentum ◽  
Frame Of Reference ◽  
Galilean Transformation ◽  
Hölder Continuous ◽  
Pressure Form ◽  
Original Frame

This chapter deals with the gluing of solutions and the relevant theorem (Theorem 12.1), which states the condition for a Hölder continuous solution to exist. By taking a Galilean transformation if necessary, the solution can be assumed to have zero total momentum. The cut off velocity and pressure form a smooth solution to the Euler-Reynolds equations with compact support when coupled to a smooth stress tensor. The proof of Theorem (12.1) proceeds by iterating Lemma (10.1) just as in the proof of Theorem (10.1). Applying another Galilean transformation to return to the original frame of reference, the theorem is obtained.

Stable jet electrospinning for easy fabrication of aligned ultrafine fibers

2012 ◽  
Vol 22 (37) ◽  
pp. 19634 ◽  
Author(s):  
Huihua Yuan ◽  
Shifang Zhao ◽  
Hongbin Tu ◽  
Biyun Li ◽  
Qin Li ◽  
...  
Keyword(s):  
Ultrafine Fibers

PCL /collagen blends prepared by solution blow spinning as potential materials for skin regeneration

2021 ◽  
Vol 138 (21) ◽  
pp. 50493
Author(s):  
Miguel A. Lorente ◽  
Angélica Corral ◽  
Javier González‐Benito
Keyword(s):  
Skin Regeneration ◽  
Solution Blow Spinning

scholarly journals Hierarchically Porous Silk/Activated-Carbon Composite Fibres for Adsorption and Repellence of Volatile Organic Compounds

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1207
Author(s):  
Aled D. Roberts ◽  
Jet-Sing M. Lee ◽  
Adrián Magaz ◽  
Martin W. Smith ◽  
Michael Dennis ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Carbon Composite ◽  
Hierarchically Porous ◽  
Surface Areas ◽  
Regenerated Silk Fibroin ◽  
Volatile Organic ◽  
Fibre Spinning ◽  
Solution Blow Spinning

Fabrics comprised of porous fibres could provide effective passive protection against chemical and biological (CB) threats whilst maintaining high air permeability (breathability). Here, we fabricate hierarchically porous fibres consisting of regenerated silk fibroin (RSF) and activated-carbon (AC) prepared through two fibre spinning techniques in combination with ice-templating—namely cryogenic solution blow spinning (Cryo-SBS) and cryogenic wet-spinning (Cryo-WS). The Cryo-WS RSF fibres had exceptionally small macropores (as low as 0.1 µm) and high specific surface areas (SSAs) of up to 79 m2·g−1. The incorporation of AC could further increase the SSA to 210 m2·g−1 (25 wt.% loading) whilst also increasing adsorption capacity for volatile organic compounds (VOCs).

Postharvest quality and antioxidant activity extension of strawberry fruit using allyl isothiocyanate encapsulated by electrospun zein ultrafine fibers

LWT ◽  
2021 ◽  
Vol 143 ◽  
pp. 111087
Author(s):  
Rosana Colussi ◽  
Wyller Max Ferreira da Silva ◽  
Barbara Biduski ◽  
Shanise Lisie Mello El Halal ◽  
Elessandra da Rosa Zavareze ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Allyl Isothiocyanate ◽  
Postharvest Quality ◽  
Strawberry Fruit ◽  
Ultrafine Fibers
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