Yarn formation of nanofibers prepared using electrospinning

Su, Ching‐Iuan; Lai, Ting-Chang; Lu, Ching-Hsiang; Liu, Yen-Sheng; Wu, Sin-Ping

doi:10.1007/s12221-013-0542-4

Cited by 28 publications

(20 citation statements)

References 13 publications

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“…Apart from the traditional application of textile materials in clothes and fabrics, recently they have been used widely in applications such as composites, filtration, sensors, and biomedical fields. Recently, nanotechnology has found applications in conventional textile materials and offers the textile industry to the production of fibers with diameters ranging from the nanoscale to microscale, which will be a novel material with distinct characteristics compared with conventional natural or synthetic fibers .…”

Section: Introductionmentioning

confidence: 99%

Morphological and mechanical properties of drawn poly(l‐lactide) electrospun twisted yarns

Maleki

Barani

2017

Polymer Engineering & Sci

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In this study, the continuous twisted PLLA yarns were produced using an electrospinning device consists of two oppositely charged nozzles. The electrospinning process was performed at different twist rates. The electrospun twisted yarns were drawn at different extension ratios of 50% and 100% and their morphological and mechanical properties of post‐drawn yarns were investigated. The morphological studies at all twist rates shown that uniform and smooth fibers without any bead were formed. Increasing the twist rate up to 240 rpm resulted to a decrease in the average diameter of the fibers in the yarn structure. After uniaxially drawing of the yarns, the average diameter of fibers and thus the yarn diameter decreased. The post‐drawing process enhanced the crystallinity of the fibers in the yarn structure. Furthermore, by increasing the extension ratio, the tensile strength and modulus of yarns increased, while the elongation at break (%) decreased. POLYM. ENG. SCI., 58:1091–1096, 2018. © 2017 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Morphological and mechanical properties of drawn poly(l‐lactide) electrospun twisted yarns

Maleki

Barani

2017

Polymer Engineering & Sci

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“…However, some of the available attempts mainly present basic conceptual ideas; therefore, it is difficult to talk about real nanofiber yarn production or nanofiber yarn structures [6][7][8][9][10][11][12], while some works present only images [63] belong to fiber webs or oriented fiber arrays [18,19,23]. On the other hand, some studies, although they are valuable attempts for further works, do not present a real yarn spinning system because they mainly produce nanofiber web strips at a certain length first, followed by twisting or plying of these strips at a next step, therefore, being a discontinuous process rather than a real spinning system [1,32,38,39,59,60,61,63]. There are also attempts that can produce real twisted nanofiber yarns continuously; however, there is usually no information about the stability of the spinning system or yarn length that can be spun without any break.…”

Section: Discussionmentioning

confidence: 99%

“…Different from these, core-yarn production by electrospinning is gaining interest; however, the first attempt belongs to Formhals [11], as already mentioned. More recently, both nanofiber yarn production and core-yarn production have been presented by Su et al [61] using a 20-tex thick filament covered by nanofibers (Table 7m). However, the yarn tenacity was quite low (0.26 cN dtex −1 ) if no core filament was used when compared to that for core-spun yarns, which is 3.25 cN dtex −1 .…”

Section: Other Methodsmentioning

confidence: 99%

Long Path Towards to Success in Electrospun Nanofiber Yarn Production Since 1930’s: A Critical Review

Göktepe

Mülayim

2018

Autex Research Journal

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Direct conversion of nanofibers into a yarn formed by electrospinning has begun to draw attention recently while pioneering attempts in fact go back to 1930s. Once nanofiber yarns are spun successfully by electrospinning, obviously, this would open new gates for many different applications. However, this is still a challenging task and there is no system accepted universally yet. There are more than 20 different approaches available so far but with serious limitations. In this review, they were categorized as (i) systems for production of parallel bundle of nanofibers and (ii) systems for production of twisted nanofiber yarns, presenting potential applicability of each with a critical point of view. The results show that some of the attempts mainly present basic conceptual ideas only. There are some works to produce real twisted nanofiber yarns continuously while mainly funnel, disc, or ring collectors have been used as the twisting element. However, there is limited information regarding stability of spinning system or control of yarn properties. This review also analyses the technical properties of electrospun nanofiber yarns summarizing the available data in terms of yarn properties such as fiber fineness, twist, production speed, mechanical properties, polymer types, and other important parameters available.

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“…Nanofibers, characterized by a high surface-to-volume ratio and great flexibility [1,2], have shown wide application in areas such as biomedical engineering, filtration, and electronic engineering [3,4]. Electrospinning is an efficient technique to produce polymeric nanofibers [5,6].…”

Section: Introductionmentioning

confidence: 99%

Nanofiber Filaments Fabricated by a Liquid-Bath Electrospinning Method

Tian¹,

Yan²,

Li³

et al. 2018

Novel Aspects of Nanofibers

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In order to investigate the forming process of multi-needle liquid-bath electrospun nanofiber filaments, nanofiber filaments were prepared using the multi-needle liquidbath electrospinning method in this chapter. The effect of auxiliary electrode on jet state, and bundling and drawing processes of nanofibers were studied. The results show that the forming process of nanofiber filaments was mainly influenced by electrostatic field interference, bundling process, and drawing process, including two processes: forming process of as-spun nanofiber filaments and post-drawing process. In the forming process of as-spun nanofiber filaments, when the auxiliary electrode was added, the electrostatic field interference between needles reduced, inducing the decrease of jet offsets and the enhancement of Taylor cone and jet stability, and nanofibers with skin-core structure were finally deposited on the bath in good condition. The bundling process of nanofiber filament was divided into three processes: wet process, wet-dry process, and dry process; the structure transformation of nanofiber filaments mainly occurred in the wet process. In the post-drawing process, the crystallinity and alignment degree of nanofibers increased, and nanofiber diameter decreased. The initial modulus and breaking stress of filaments increased while the breaking strain of filaments decreased. Finally, nanofiber filaments were produced with better structures and properties.

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Yarn formation of nanofibers prepared using electrospinning

Cited by 28 publications

References 13 publications

Morphological and mechanical properties of drawn poly(l‐lactide) electrospun twisted yarns

Morphological and mechanical properties of drawn poly(l‐lactide) electrospun twisted yarns

Long Path Towards to Success in Electrospun Nanofiber Yarn Production Since 1930’s: A Critical Review

Nanofiber Filaments Fabricated by a Liquid-Bath Electrospinning Method

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