A comparative study on SiO2 nanofiber production via two novel non-electrospinning methods: Centrifugal spinning vs solution blowing

Çalişir, Mehmet Durmuş

doi:10.1016/j.matlet.2019.126751

Cited by 45 publications

(23 citation statements)

References 13 publications

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“…[22] It has been successfully used for fabricating several types of fibrous mats with homogeneous morphology with low diameter distribution and without droplets/beads. [23][24][25][26] In CS, centrifugal forces obtained by high-speed rotating motor are used for producing fibers from viscous polymer solutions. Concentration of spinning solution, evaporation rate of the solvents, rotational speed of the spinneret, and spinneret-collector distance are the main parameters in CS that directly affect fiber morphology.…”

Section: Introductionmentioning

confidence: 99%

Developing centrifugal spun thermally cross‐linked gelatin based fibrous biomats for antibacterial wound dressing applications

Güngör

Sagirli

Çalişir

et al. 2021

Polymer Engineering & Sci

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Fibrous materials obtained from natural polymers, such as gelatin, have been used in medical applications due to their biocompatibility and biodegradability. Herein, free‐standing durable fibrous gelatin biomats with antibacterial activity were developed via a simple, low cost and fast production route, centrifugal spinning, and subsequent thermal crosslinking. After a series of preliminary experiments, droplet−/bead‐free porous biomats with fine fibers, 3.41 ± 1.8 μm in diameter, were fabricated. Subsequently, antimicrobial biomats were produced by adding AgNO3 into the production solution. X‐ray diffractometer and energy dispersive X‐ray results showed Ag NPs existing as AgCl in the biomats, which could be attributed to chemical reaction between the Ag NPs and residual Cl in the impure gelatin. Later, both the neat‐gelatin and Ag‐gelatin biomats were thermally crosslinked at 170°C to gain stability against water. Although the Ag addition reduced ultimate tensile strength by half, from 881 to 495 kPa, the crosslinked biomats were robust enough to be used for wound dressing applications. They were also found to be highly breathable, with the air permeability of 256 and 81.2 mm/s, respectively. The biomats showed antibacterial activity against Escherichia coli and Staphylococcus aureus bacteria. The results show that the free‐standing fibrous‐gelatin‐based biomats produced is applicable for wound dressing applications.

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Section: Introductionmentioning

confidence: 99%

Developing centrifugal spun thermally cross‐linked gelatin based fibrous biomats for antibacterial wound dressing applications

Güngör

Sagirli

Çalişir

et al. 2021

Polymer Engineering & Sci

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“…can be achieved by the addition of fillers in polymer matrices 1 . Due to their high surface area to volume ratio, composite nanofibers have been extensively used in many applications, such as biomedical, filtration, tissue engineering, and energy storage 2–5 . In particular, carbon fibers, and nanofibers prepared by electrospinning and subsequent heat treatment of polymer‐fiber precursors have been widely used in energy storage applications 6 .…”

Section: Introductionmentioning

confidence: 99%

Centrifugally spun carbon fibers prepared from aqueous poly(vinylpyrrolidone) solutions as binder‐free anodes in lithium‐ion batteries

Chavez¹,

Lodge

Huitron³

et al. 2020

J of Applied Polymer Sci

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Aqueous solutions of poly(vinylpyrrolidone) (PVP) of various concentrations (20, 25, and 28 wt%) were successfully spun into fibers by centrifugal spinning. The pristine PVP fibers were annealed and carbonized to produce flexible carbon fibers for use as binder‐free anodes in lithium‐ion batteries. These flexible carbon fibers were prepared by developing a novel three‐step heat treatment to reduce the residual stresses in the pristine PVP precursor fibers, and to prevent fiber degradation during carbonization. The thermogravimetric analysis data showed that the annealed fibers yielded a residual mass percentage of 36.0% while the pristine PVP fibers suffered a higher mass loss and only retained 26.5% of original mass above 450 °C (under nitrogen). The electrochemical performance of the carbon‐fiber anodes was evaluated by conducting galvanostatic charge/discharge, rate performance, and cycle voltammetry experiments. The 20, 25, and 28 wt% derived binder‐free anodes delivered specific charge capacities of 205, 189, and 275 mAh g−1, respectively, after the first cycle at a current density of 100 mA g−1. The results obtained in this work indicate that a feasible pathway towards a large‐scale production of carbon‐fiber anodes from a 100% aqueous solution can be achieved via centrifugal spinning and subsequent heat treatment.

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“…This could be ascribed to the very low electroconductivity of cellulose in comparison to the higher electroconductivity of cellulose acetate [ 34 , 35 , 36 , 37 ]. On the other side, the recently innovated solution blowing spinning is characterized with simplicity, lower cost, higher production rate and safer as it does not require high voltage as in the case of electrospinning [ 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Solution Blowing Spinning Technology towards Green Development of Urea Sensor Nanofibers Immobilized with Hydrazone Probe

2021

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Cellulose has been one of the most widespread materials due to its renewability, excellent mechanical properties, biodegradability, high absorption ability, biocompatibility and cheapness. Novel, simple and green colorimetric fibrous film sensor was developed by immobilization of urease enzyme (U) and tricyanofuran hydrazone (TCFH) molecular probe onto cellulose nanofibers (CNF). Cellulose acetate nanofibers (CANF) were firstly prepared from cellulose acetate using the simple, green and low cost solution blowing spinning technology. The produced CANF was exposed to deacetylation to introduce CNF, which was then treated with a mixture of TCFH and urease enzyme to introduce CNF-TCFH-U nanofibrous biosensor. CNF were reinforced with tricyanofuran hyrazone molecular probe and urease enzyme was encapsulated into calcium alginate biopolymer to establish a biocomposite film. This CNF-TCFH-U naked-eye sensor can be applied as a disposable urea detector. CNF demonstrated a large surface area and was utilized as a carrier for TCFH, which is the spectroscopic probe and urease is a catalyst. The biochromic CNF-TCFH-U nanofibrous biosensor responds to an aqueous medium of urea via a visible color signal changing from off-white to dark pink. The morphology of the generated CNF and CNF-TCFH-U nanofibrous films were characterized by different analytical tools, including energy-dispersive X-ray patterns (EDX), polarizing optical microscope (POM), Fourier-transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM). SEM images of CNF-TCFH-U nanofibers demonstrated diameters between 800 nm and 2.5 μm forming a nonwoven fabric with a homogeneous distribution of TCFH/urease-containing calcium alginate nanoparticles on the surface of CNF. The morphology of the cross-linked calcium alginate nanoparticles was also explored using transmission electron microscopy (TEM) to indicate an average diameter of 56–66 nm. The photophysical performance of the prepared CNF-TCFH-U was also studied by CIE Lab coloration parameters. The nanofibrous film biosensor displayed a relatively rapid response time (5–10 min) and a limit of detection as low as 200 ppm and as high as 1400 ppm. Tricyanofuran hydrazone is a pH-responsive disperse dye comprising a hydrazone detection group. Determination of urea occurs through a proton transfer from the hydrazone group to the generated ammonia from the reaction of urea with urease.

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A comparative study on SiO2 nanofiber production via two novel non-electrospinning methods: Centrifugal spinning vs solution blowing

Cited by 45 publications

References 13 publications

Developing centrifugal spun thermally cross‐linked gelatin based fibrous biomats for antibacterial wound dressing applications

Developing centrifugal spun thermally cross‐linked gelatin based fibrous biomats for antibacterial wound dressing applications

Centrifugally spun carbon fibers prepared from aqueous poly(vinylpyrrolidone) solutions as binder‐free anodes in lithium‐ion batteries

Solution Blowing Spinning Technology towards Green Development of Urea Sensor Nanofibers Immobilized with Hydrazone Probe

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