Studies on the Melt Spinning Process of Square 8-hole Hollow Polyester Fibre

Feng, Pei; Pan, Jun; Ma, Qihua; Yang, Chong

doi:10.5604/01.3001.0011.7297

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…Hyaluronan, as a member of polysaccharide family (actually a hetero-polysaccharide), cannot be fluxed; consequently, fibers cannot be fabricated by the melt spinning process, as opposed to, for instance, polyester and polyethylene terephthalate [25,26]. By contrast, the wet spinning method adopted from the textile industry allows researchers to obtain biopolymer fibers with a set diameter.…”

Section: Wet Spinning Methodsmentioning

confidence: 99%

Hyaluronan-Based Nanofibers: Fabrication, Characterization and Application

et al. 2019

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Nano- and microfibers based on biopolymers are some of the most attractive issues of biotechnology due to their unique properties and effectiveness. Hyaluronan is well-known as a biodegradable, naturally-occurring polymer, which has great potential for being utilized in a fibrous form. The obtaining of fibers from hyaluronan presents a major challenge because of the hydrophilic character of the polymer and the high viscosity level of its solutions. Electrospinning, as the advanced and effective method of the fiber generation, is difficult. The nano- and microfibers from hyaluronan may be obtained by utilizing special techniques, including binary/ternary solvent systems and several polymers described as modifying (or carrying), such as polyethylene oxide (PEO) and polyvinyl alcohol (PVA). This paper reviews various methods for the synthesis of hyaluronan-based fibers, and also collects brief information on the properties and biological activity of hyaluronan and fibrous materials based on it.

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Section: Wet Spinning Methodsmentioning

confidence: 99%

Hyaluronan-Based Nanofibers: Fabrication, Characterization and Application

et al. 2019

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“…Steps involved in modelling the mixing (collection) chamber include building up mixing chamber space geometry, selection of physics module, assigning values and defining boundaries and meshing. In addition, Fibre modelling found in literature are simplified representations that do not consider structural transformation of fibres as it is spun [21] [22] [23] [24]. The modelling of fibre as it spins under transient boundary conditions is a challenge.…”

Section: Mixing Chamber Modellingmentioning

confidence: 99%

Modelling the Influence of Air Jet Configurations on Non-Woven Steel Fibre Mixing in the Melt Overflow Process

Abubakar¹,

Gong²,

Nammi³

et al. 2022

MNSMS

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The mixing of non-woven steel fibres in melt overflow process for use in automotive muffler systems was simulated. The aim was to identify optimum parameters for achieving a good fibre mix. Numerical models of mixing chambers of melt overflow process were developed. Multiphysics analyses involving heat transfer, fluid flow and particle tracking were carried out using COMSOL code. The influence of air jet configurations on the fibre distribution was studied. The fibres settled on the moving bed within the mixing chamber were examined for their uniformity. The effect of additional air jets to the existing chamber in a range of regions was explored. An optimum configuration was identified by analyzing the compactness of the particle clusters deposited in the simulation and validated using pixel data acquired from real time imaging. The results showed that by employing dual air jets at the front end of the chamber, the density of the fibre material has improved. We conclude that through multi-physics modelling, it was possible to identify the optimum air-jet configurations leading to fibre uniformity and its distribution. This work also paves the way for incorporating a vision system to evaluate fibre density in real time.

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“…They also have a relatively larger specific surface area, a softer texture, better anti-pilling properties, stronger compression resistance, and superior performance in terms of deformation resistance [ 19 ]. By using three-hole hollow fibers, Chen et al developed durable Janus hollow fibers that have been gradually developed and applied in many fields in recent years due to their unique characteristics [ 20 ]. Taehwan Oh et al used the finite element method to simulate the melt-spinning process of hollow fibers.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Experimental Verification of Melt-Spinning Parameters’ Effects on Multi-Leaf Hollow-Profiled Fiber Preparation

He,

Xu,

Feng

et al. 2024

Polymers

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Multi-leaf hollow-profiled fiber is a complex-shaped fiber with a hollow structure with at least three leaves arranged outside. In this work, spinning processes for the preparation of multi-leaf hollow-profiled fiber with complex cross-section patterns were proposed. Initially, the characteristics and preparation methods of multi-leaf hollow-profiled fibers were analyzed, and the key technologies for their preparation were studied. Further, micro-hole spinnerets were designed, and the numerical simulations of melt flow in the spinning channel were performed. Then, the preparation of six-leaf hollow profiled fibers was carried out to study the formation of the cross-sections. Finally, as an extension and application, an experimental verification of the melt spinning parameters’ effects on eight-leaf hollow fiber preparation was conducted. From the results of the spinning experiments, it was found that when the volume flow rate of a single hole increased from 2.33 × 10−8 m3/s to 3.33 × 10−8 m3/s, the profile degree of the spun fiber increased from 30.93% to a maximum value of 40.99%. Furthermore, when the cooling speed increased from 0.6 m/s to 1 m/s, the profile degree increased from 29.56% to 41.63%. When the initial blowing height increased from 80 mm to 140 mm, the profile degree decreased from 40.99% to 27.13%. When the spinning temperature increased from 285 °C to 290 °C, the profile degree decreased from 40.99% to 38.56%. However, the winding speed had an insignificant effect on the cross-sectional shape of the spun fibers. Moreover, the spun fibers showed good performance and a natural three-dimensional crimp function.

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Studies on the Melt Spinning Process of Square 8-hole Hollow Polyester Fibre

Cited by 3 publications

References 13 publications

Hyaluronan-Based Nanofibers: Fabrication, Characterization and Application

Hyaluronan-Based Nanofibers: Fabrication, Characterization and Application

Modelling the Influence of Air Jet Configurations on Non-Woven Steel Fibre Mixing in the Melt Overflow Process

Numerical Simulation and Experimental Verification of Melt-Spinning Parameters’ Effects on Multi-Leaf Hollow-Profiled Fiber Preparation

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