Porosity Control of Electrospun PAN/PMMA Nanofiber Webs

Choi, Seo Yeon; Han, Eun Mi; Park, Kyung Hee

doi:10.1080/15421406.2019.1651070

Cited by 11 publications

(2 citation statements)

References 10 publications

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“…The viscosity and conductivity of the PAN solution may also be carefully controlled to avoid issues such as bead formation, fiber breakage, and inconsistent fiber diameter. Other factors that can impact the electrospinning process comprise humidity, temperature, and air flow, which can affect fiber alignment and orientation [10][11][12][13][14][15]. Overall, the successful electrospinning of PAN nanofibers requires thorough optimization of multiple process parameters and attention to detail to ensure reproducibility and consistent fiber properties.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Prediction of Electrospun Nanofiber Diameter Based on Artificial Neural Network

Zhou

Gao

et al. 2023

Polymers

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Electrospinning technology enables the fabrication of electrospun nanofibers with exceptional properties, which are highly influenced by their diameter. This work focuses on the electrospinning of polyacrylonitrile (PAN) to obtain PAN nanofibers under different processing conditions. The morphology and size of the resulting PAN nanofibers were characterized using scanning electron microscopy (SEM), and the corresponding diameter data were measured using Nano Measure 1.2 software. The processing conditions and corresponding nanofiber diameter data were then inputted into an artificial neural network (ANN) to establish the relationship between the electrospinning process parameters (polymer concentration, applied voltage, collecting distance, and solution flow rate), and the diameter of PAN nanofibers. The results indicate that the polymer concentration has the greatest influence on the diameter of PAN nanofibers. The developed neural network prediction model provides guidance for the preparation of PAN nanofibers with specific dimensions.

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Section: Introductionmentioning

confidence: 99%

Analysis and Prediction of Electrospun Nanofiber Diameter Based on Artificial Neural Network

Zhou

Gao

et al. 2023

Polymers

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“…Low melting point polymer PMMA used as a pore-forming agent was added to the PAN precursor solution to create mesopores. During the carbonization process, nickel coordinates with nitrogen forming Ni-N 4 active sites incorporated into the backbone of PAN, and PMMA completely decomposes and leaves the vertical distributed pore structure at high temperatures, − which can be tuned by adjusting PMMA loadings (0, 0.4 g, 0.5 g, 0.6 g in 5 mL DMF). As shown in the cross-section SEM (Figure b) and TEM (Figure c) images, Ni-PCNF-0.5PMMA exhibited a porous structure vertically aligned with fibers.…”

Section: Resultsmentioning

confidence: 99%

Self-Supported Porous Carbon Nanofibers Decorated with Single Ni Atoms for Efficient CO₂ Electroreduction

Wang

Chuai

Chen

et al. 2022

ACS Appl. Mater. Interfaces

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Single-atom catalysts within M-N-C structures are efficient for electrochemical CO 2 reduction. However, most of them are powdered and require a coating process to load on the electrode. Herein, we developed a facile approach to the synthesis of largescale self-supported porous carbon nanofiber electrodes directly decorated with atomically dispersed nickel active sites using facile electrospinning, where poly(methyl methacrylate) was employed to tune well the distributions of pores located in carbon nanofibers. The above self-supported carbon nanofibers were applied as a gas diffusion electrode to achieve 94.3% CO Faraday efficiency and 170 mA cm −2 current density, which can be attributed to the effects of rich mesoporous structures favorable for adsorption and mass transfer of CO 2 and single nickel catalysts effectively converting CO 2 to CO. This work provides an efficient strategy to fabricate self-supported electrodes and may accelerate the progress toward industrial applications of single-atom catalysts in the field of CO 2 electroreduction.

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Natural and synthetic polymeric scaffolds used in peripheral nerve tissue engineering: Advantages and disadvantages

Amini

Salehi

Setayeshmehr

et al. 2021

Polymers for Advanced Techs

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The nervous system is a compound network of nerves, cells and is a vital part of the body. The injuries to this system can occur either via traumatic hurt happening after the accident, disease, tumorous outgrowth, or surgical side results. The regeneration of the nervous system is complex and takes big challenges to researchers. Nerve tissue engineering (NTE) is the most promising approach to repair nerve tissue in human health care. One of the most common solutions widely used for repairing functions in damaged neural tissues utilizes polymeric materials either natural or synthetic in origin. Polymers are able to develop into help structures, such as scaffold, electrospun matrices, and nerve conduit for promoting the regeneration of the damaged neural tissues that many investigations have shown. As usual, synthetic polymers suggest better structural stability and mechanical properties while natural polymers are highly useful for their high biocompatibility and natural biodegradation properties. However, low mechanical characteristics, processing difficulties and, thermal sensitivity that commonly need the use of solvents, limit the efficacy of natural polymers, stimulating researchers to blend them with synthetic or electroconductive polymers. Mostly, the blending of natural and synthetic allows for expanding polymeric conduits that help to mimic the substrate environment of healthy neural tissues. This review represents the most advanced and various recent findings in terms of the forms of natural and Synthetic polymers used in peripheral NTE, advantages, and disadvantages.

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Porosity Control of Electrospun PAN/PMMA Nanofiber Webs

Cited by 11 publications

References 10 publications

Analysis and Prediction of Electrospun Nanofiber Diameter Based on Artificial Neural Network

Analysis and Prediction of Electrospun Nanofiber Diameter Based on Artificial Neural Network

Self-Supported Porous Carbon Nanofibers Decorated with Single Ni Atoms for Efficient CO₂ Electroreduction

Natural and synthetic polymeric scaffolds used in peripheral nerve tissue engineering: Advantages and disadvantages

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Porosity Control of Electrospun PAN/PMMA Nanofiber Webs

Cited by 11 publications

References 10 publications

Analysis and Prediction of Electrospun Nanofiber Diameter Based on Artificial Neural Network

Analysis and Prediction of Electrospun Nanofiber Diameter Based on Artificial Neural Network

Self-Supported Porous Carbon Nanofibers Decorated with Single Ni Atoms for Efficient CO2 Electroreduction

Natural and synthetic polymeric scaffolds used in peripheral nerve tissue engineering: Advantages and disadvantages

Contact Info

Product

Resources

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Self-Supported Porous Carbon Nanofibers Decorated with Single Ni Atoms for Efficient CO₂ Electroreduction