Design and implementation of an electrospinning system

Karatay, Okan; Doğan, Mustafa

doi:10.1016/b978-0-323-41532-3.00012-9

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…Different groups in the past have proposed theoretical and experimental models to describe various aspects of solution-electrospinning (SES) and MES processes. [11][12][13][14][15][16][17] For example, the critical voltage level required to trigger the jet stream in a solution-based electrospinning process was first estimated by Taylor. 18 Others later expanded his work to include the characterization of the polymer jet flow behaviors in the stable regions.…”

Section: Introductionmentioning

confidence: 99%

A study on theoretical predictive model and experimental findings of melt‐electrospinning process

Wubneh,

Kim,

Ayranci

2024

Polymers for Advanced Techs

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The current study extends a previous work published by the authors in which an analytical predictive model is proposed to simulate the melt‐electrospinning process. The analytical model is specifically designed to predict the various behaviors of the melt‐electrospun fiber under different material and processing conditions. A brief discussion of this model is presented here to establish context and help the reader capture the modeling philosophy employed. The current study complements the previous work by focusing on the experimental aspects of the research. Correlations between the independent process parameters and the topological attributes of the melt‐electrospun fibers are investigated and compared with findings from the theoretical model. The effects of changes in the process parameters on average fiber diameters and the collection diameter are experimentally analyzed using the design of experiments (DOE) techniques. Toward this end, polylactic acid (PLA) is melt‐electrospun at different treatment levels of the processing parameters in a controlled environment. Two regression‐based models—one for predicting the collection diameter and the other for the fiber diameter—are derived from the DOE data for benchmarking and quantitative evaluation of the predictive performance of the theoretical model. The theoretical model is run based on the same treatment levels as the experiment. The elastic parameter values used in the theoretical simulation are extracted from rheological tests. Comparison between the simulated and the observed fiber characteristics revealed that the collector diameter predictions by the theoretical model exhibited approximately a 16.7% difference compared to 24.2% for the average fiber diameter. Finally, a discussion is presented on the challenges and potential factors contributing to the observed differences. Overall, given the identified challenges and gaps in material characterization, the results of the theoretical predictive model are encouraging.

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Section: Introductionmentioning

confidence: 99%

A study on theoretical predictive model and experimental findings of melt‐electrospinning process

Wubneh,

Kim,

Ayranci

2024

Polymers for Advanced Techs

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“…Electrospinning technique has received a great attention due to its low cost and ability to produce nanofibers with diameters ranging from a few microns to nanometers and due to their large surface area to volume ratio [1][2][3][4]. Electronic, optical, electrical, and mechanical properties of such fibers can be easily modified [5,6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Layer Thickness on I-V Characteristics of GaInP Nanofibers Fabricated by Electrospinning on n-Si Substrates

et al. 2017

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GaInP nanofibers were formed on n-Si substrates by electrospinning method, using constant voltage (25 kV), height (6 cm), and flow rate (0.3 ml/h) during various process times (of 10, 20, 25 minutes). Characterization of the prepared samples was performed by X-ray diffraction, differential scanning calorimetry/thermal gravimetric analysis, scanning electron microscopy, and energy dispersive X-ray spectrometry. Furthermore, the currentvoltage measurements of the GaInP/n-Si samples have been carried out. The obtained results show that I − V characteristics of all GaInP/n-Si samples fabricated with three thicknesses of GaInP layers are rather in a good agreement with the theory and that they exhibit rectifying properties.

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A Novel Theoretical Model Development and Simulation of Melt‐Electrospinning Using Kane's and Udwadia–Kalaba Methods

Wubneh

Ayranci

Kim

2022

Advcd Theory and Sims

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A novel analytical model development and simulation of melt-electrospinning process is presented. Unconstrained equations of motion for the description of a discretized melt-electrospun fiber are formulated using Kane's method. The motions of the spinneret and the collector plate are also incorporated into the kinematics formulation to simulate direct writing and three-dimensional printing scenarios. Constraints describing viscoelastic joints in the system and the phenomenon of the melt-electrospun fiber adhering to the collector plate are implemented using the Udwadia Kalaba method. Rotational viscoelastic elements are introduced to mimic the dampening of the whipping motion observed in the unstable region. A novel algorithm is devised to continuously run the simulation with no limit on the total duration and phase transitions. System responses such as fiber diameter, collection size, fiber elongations, and jet speeds are monitored for changes in control parameters including applied voltage, collector distance, and flowrate. The results demonstrate close agreement with experimental observations in the literature. The jet starts relatively straight on the onset of its trajectory and develops subtle whipping motion as it advances toward the collector plate. Reduction in the amplitude of the whipping motion is observed once the free end of the fiber adhered to the collector plate.

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Design and implementation of an electrospinning system

Cited by 3 publications

References 20 publications

A study on theoretical predictive model and experimental findings of melt‐electrospinning process

A study on theoretical predictive model and experimental findings of melt‐electrospinning process

Effect of Layer Thickness on I-V Characteristics of GaInP Nanofibers Fabricated by Electrospinning on n-Si Substrates

A Novel Theoretical Model Development and Simulation of Melt‐Electrospinning Using Kane's and Udwadia–Kalaba Methods

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