Dissipative particle dynamics simulations of centrifugal melt electrospinning

Liu, Yong; Li, Kaili; Mohideen, Mohamedazeem M.; Ramakrishna, Seeram

doi:10.1016/b978-0-12-816220-0.00007-5

Cited by 3 publications

(3 citation statements)

References 32 publications

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“…This driving force is exacerbated when an electric field is applied. Several papers have addressed this topic, and it seems to be the only area where there is a consensus—regardless of whether it is solution or melt electrospinning, gravity is so weak compared with the centrifugal force that its effects are negligible [ 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 ].…”

Section: State Of the Art—impact Of Apparatus Orientation In Electmentioning

confidence: 99%

Impact of Apparatus Orientation and Gravity in Electrospinning—A Review of Empirical Evidence

2020

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Electrospinning is a versatile fibre fabrication method with applications from textile to tissue engineering. Despite the appearance that the influencing parameters of electrospinning are fully understood, the effect of setup orientation has not been thoroughly investigated. With current burgeoning interest in modified and specialised electrospinning apparatus, it is timely to review the impact of this seldom-considered parameter. Apparatus configuration plays a major role in the morphology of the final product. The primary difference between spinning setups is the degree to which the electrical force and gravitational force contribute. Since gravity is much lower in magnitude when compared with the electrostatic force, it is thought to have no significant effect on the spinning process. But the shape of the Taylor cone, jet trajectory, fibre diameter, fibre diameter distribution, and overall spinning efficiency are all influenced by it. In this review paper, we discuss all these developments and more. Furthermore, because many research groups build their own electrospinning apparatus, it would be prudent to consider this aspect as particular orientations are more suitable for certain applications.

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Section: State Of the Art—impact Of Apparatus Orientation In Electmentioning

confidence: 99%

Impact of Apparatus Orientation and Gravity in Electrospinning—A Review of Empirical Evidence

2020

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“…Several approaches to the simulation of the electrospinning process have been formulated over the past years, including numeric motion simulations [ 24 ] and crystallization simulations [ 25 ]. These approaches cover various electrospinning scenarios, including centrifugal electrospinning [ 26 ], morphology simulations [ 27 ], and fiber diameter simulations [ 25 ] in numerical environments. Furthermore, the finite element method (FEM) has been used for field calculations [ 28 ] and for the calculation of the mechanical properties of the resulting fibers [ 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Melt Electrospinning of PET and Composite PET-Aerogel Fibers: An Experimental and Modeling Study

et al. 2021

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Increasingly advanced applications of polymer fibers are driving the demand for new, high-performance fiber types. One way to produce polymer fibers is by electrospinning from polymer solutions and melts. Polymer melt electrospinning produces fibers with small diameters through solvent-free processing and has applications within different fields, ranging from textile and construction, to the biotech and pharmaceutical industries. Modeling of the electrospinning process has been mainly limited to simulations of geometry-dependent electric field distributions. The associated large change in viscosity upon fiber formation and elongation is a key issue governing the electrospinning process, apart from other environmental factors. This paper investigates the melt electrospinning of aerogel-containing fibers and proposes a logistic viscosity model approach with parametric ramping in a finite element method (FEM) simulation. The formation of melt electrospun fibers is studied with regard to the spinning temperature and the distance to the collector. The formation of PET-Aerogel composite fibers by pneumatic transport is demonstrated, and the critical parameter is found to be the temperature of the gas phase. The experimental results form the basis for the electrospinning model, which is shown to reproduce the trend for the fiber diameter, both for polymer as well as polymer-aerogel composites.

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“…Among these methods, electrospinning and melt blowing were reported to produce micro/nanofibrous membranes for many years [8,9]. However, PP cannot be dissolved in common solvents at room temperature [10] and is restricted for the PP fibrous membranes via electrospinning process due to its limitations such as low conductivity, complex equipment, and high melting temperature [11,12]. While, the melt blowing is a common method used in industry for producing micro/nanofibrous materials with the materials of thermoplastic polymer melt [13,14].…”

Section: Introductionmentioning

confidence: 99%

Binary structured polypropylene-/propylene-based elastomer fibrous membranes with enhanced flexibility

Zhang

Zhen

Liu

et al. 2020

Journal of Industrial Textiles

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Polypropylene (PP) fibrous membranes are widely used in medical and healthcare due to its sustainability. However, pristine PP fibrous membranes show poor flexibility, which limits their advanced functional application in medical and healthcare. Therefore, to improve the flexibility of PP fibrous membranes, propylene-based elastomer (PBE), a copolymer compatible with PP, was introduced by using the melt blowing technique in this study. The SEM images show that the PP/PBE fibrous membrane samples expressed a binary structured network morphology consisting of fibers with a diameter distribution ranging from 0.4 to 15 µm. With an increase in PBE mass ratio from 15 to 80 wt%, the frequency of fibers with a diameter <3 µm increased from 48.6 to 61.2%, thus making the elastic recovery rate in the machine direction (MD) increase from 62.9 to 80.3% and softness values increase from 15.88 to 54.31. Meanwhile, air permeability increased from 856 to 2257 m3/m2 · h as the mass per unit area of the samples decreased from 129.9 to 40.1 g/m2. This work provides an alternate method for producing flexible fibrous membranes that have potential for application in items such as surgical gown cuffs, bandages, and face mask ear loops.

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Dissipative particle dynamics simulations of centrifugal melt electrospinning

Cited by 3 publications

References 32 publications

Impact of Apparatus Orientation and Gravity in Electrospinning—A Review of Empirical Evidence

Impact of Apparatus Orientation and Gravity in Electrospinning—A Review of Empirical Evidence

Melt Electrospinning of PET and Composite PET-Aerogel Fibers: An Experimental and Modeling Study

Binary structured polypropylene-/propylene-based elastomer fibrous membranes with enhanced flexibility

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