Improving the electrospinning process of fabricating nanofibrous membranes to filter PM2.5

Cao, Mingyi; Gu, Fengshou; Rao, C.S.P.; Fu, Jianzhong; Zhao, Peng

doi:10.1016/j.scitotenv.2019.02.207

Cited by 45 publications

(35 citation statements)

References 49 publications

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“…With increasing the polymer solutions concentration, beads were reduced since polymer chains entanglement, and viscosity increased, and ultimately, the diameter of nanofibers increased. [14]…”

Section: Discussionmentioning

confidence: 99%

“…[5,[9][10][11] Electrospinning is one of the most efficient, cost-effective, and straightforward methods to fabricate micro/ nanofibers in a continues process from synthesis and natural polymers. [12][13][14][15][16] The main of electrospinning parameters are voltage, flow rate, and needle-collector distance. Also, solvents type and their ratios, polymer or copolymer concentration, solution viscosity, and solution conductivity are solution properties that affect the formation of fiber.…”

Section: Introductionmentioning

confidence: 99%

“…Also, solvents type and their ratios, polymer or copolymer concentration, solution viscosity, and solution conductivity are solution properties that affect the formation of fiber. [14,17,18] Nanofibers are made from natural or synthetic biopolymers such as gelatin, starch, Poly(ϵ-caprolactone), and Poly(lactic acid) for tissue engineering applications. Poly(lactic acid) is an aliphatic polyester derived from renewable sources such as cornstarch, sugarcane, and other annually renewable biomass products and wastes, which can be obtained from direct condensation polymerization of lactic acid monomers or the ringopening polymerization of the cyclic lactide dimers.…”

Section: Introductionmentioning

confidence: 99%

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Electrospun PCL and PLA hybrid nanofibrous scaffolds containing Nigella sativa herbal extract for effective wound healing

Sharifi

Bahrami

Nejad

et al. 2020

J of Applied Polymer Sci

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Black seed (Nigella sativa [NS]) is used in traditional medicine as an antibacterial agent. In this study, novel hybrid scaffolds were manufactured from poly(ɛ‐caprolactone[PCL])/ Poly(lactic acid [PLA]) with NS extract by double‐nozzle electrospinning for wound healing application. Optimal conditions were found using response surface methodology including feed rate 0.8 ml/hr, voltage 20 kV and PLA 8% /PCL 10% concentrations. The effect of NS extract on the properties of the scaffold was evaluated by scanning electron microscopy, contact angle, and mechanical test. The PLA‐PCL/NS 20% beadles, and smooth nanofibrous web was obtained as the optimum scaffold with an average diameter of 638 ± 69 nm and the contact angle of 44°. In addition, the biological properties of the scaffolds such as antibacterial against Staphylococcus aureus (gram‐positive) and Escherichia coli (gram‐negative) bacteria, MTT assay, extract release, and cell growth (human mesenchymal stem cells) were examined. Incorporation of NS extract into the nanofibers caused to enhance the biological properties, cell viability and cell proliferation without toxicity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrospun PCL and PLA hybrid nanofibrous scaffolds containing Nigella sativa herbal extract for effective wound healing

Sharifi

Bahrami

Nejad

et al. 2020

J of Applied Polymer Sci

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“…Although ABS has been comprehensively investigated and applied in many areas, only countable studies on its fibers and applications in fiber morphology are available. Electrospinning is a facial technology to produce fibers with diameters in the range from sub-nanometers to tens of micrometers and electrospun fibers have been applied in almost all fields, including tissue engineering, composites, actuators, catalysts, filtration and sponges [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. In 2014, ABS and ABS/zeolite composite fibers were firstly prepared by electrospinning technology, but the fibers have a broad diameter distribution and no application was presented [18].…”

Section: Introductionmentioning

confidence: 99%

Electrospinning of ABS nanofibers and their high filtration performance

et al. 2020

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Acrylonitrile-butadiene-styrene (ABS) is a commercial polymer for widely industrial applications due to its good mechanical and physical properties. However, there are only countable reports regarding its fibers from electrospinning. Comprehensive investigation on its optimized electrospinning parameters is missing. Herein, ABS fibers with different fiber diameters were produced by electrospinning. The electrospinning conditions, including the solvents, solution concentrations and amounts of different salt additives, have been comprehensively investigated. The morphologies of electrospun ABS fibers are studied by scanning electron microscopy and Raman spectroscopy. Different fiber diameters and coating densities are applied for filtration applications, which showed excellent filtration performance. The filtration efficiency of up to 99%, low pressure drop of < 30 Pa, and high filtration quality factor of up to 0.477 are achieved from the electrospun ABS fibers coated on microfibrous polypropylene substrates. In addition, the electrospun ABS fibers also shows good thermal stability and other applications such as oil/water separation.

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“…Because of these challenges, researchers have conducted many studies to explore the approaches to take in order to optimize injection-molding parameters. e design of experiments (DOE), such as the Taguchi method, is applied to improve the quality of manufactured goods by analyzing the signal-to-noise (S/N) ratio and the analysis of variance (ANOVA) [16][17][18][19][20][21]. e Taguchi method is unsuitable for the problem in this study because process parameters are continuous.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Injection-Molding Process Parameters for Weight Control: Converting Optimization Problem to Classification Problem

Zhao

Dong

Zhang

et al. 2020

Advances in Polymer Technology

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Product weight is one of the most important properties for an injection-molded part. The determination of process parameters for obtaining an accurate weight is therefore essential. This study proposed a new optimization strategy for the injection-molding process in which the parameter optimization problem is converted to a weight classification problem. Injection-molded parts are produced under varying parameters and labeled as positive or negative compared with the standard weight, and the weight error of each sample is calculated. A support vector classifier (SVC) method is applied to construct a classification hyperplane in which the weight error is supposed to be zero. A particle swarm optimization (PSO) algorithm contributes to the tuning of the hyperparameters of the SVC model in order to minimize the error between the SVC prediction results and the experimental results. The proposed method is verified to be highly accurate, and its average weight error is 0.0212%. This method only requires a small amount of experiment samples and thus can reduce cost and time. This method has the potential to be widely promoted in the optimization of injection-molding process parameters.

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Improving the electrospinning process of fabricating nanofibrous membranes to filter PM2.5

Cited by 45 publications

References 49 publications

Electrospun PCL and PLA hybrid nanofibrous scaffolds containing Nigella sativa herbal extract for effective wound healing

Electrospun PCL and PLA hybrid nanofibrous scaffolds containing Nigella sativa herbal extract for effective wound healing

Electrospinning of ABS nanofibers and their high filtration performance

Optimization of Injection-Molding Process Parameters for Weight Control: Converting Optimization Problem to Classification Problem

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