Morphological aspects of polymer fiber mats obtained by air flow rotary-jet spinning

Mindru, T. Balau; Ignat, Leonard; Mîndru, Iulia Bălău; Pinteala, Mariana

doi:10.1007/s12221-013-1526-0

Cited by 23 publications

(23 citation statements)

References 21 publications

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“…The RJS technique basically consists of a reservoir with nozzles, placed in the center of a collector. As the reservoir spins at high rotational speeds, the centrifugal force acts extruding the polymer solution and forming fibers while the solvent evaporates before reaching the collector 21 . This technique presents high efficiency, low cost, and can produce fibers from different polymer solutions and with different morphologies 22 .…”

Section: Introductionmentioning

confidence: 99%

“…Until now, only few studies presented the production of TE scaffolds based on blends between proteins and synthetic polymers using RJS. 21,25 Also, some techniques have been studied to fabricate tubular fibrous scaffolds in situ, such as phase separation 26 and ES. 27 However, the scalability of medical implant manufacturing is a limiting factor, making it important to develop new techniques capable of successfully producing tubular scaffolds.…”

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confidence: 99%

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A novel technique to produce tubular scaffolds based on collagen and elastin

et al. 2020

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Diseases of the cardiovascular system are the leading cause of mortality in the world, responsible for an average of 17.9 million deaths per year. 1 The most expressive are the ischemic heart diseases which occur due to the obstruction of blood vessels. In this scenario, some of the main alternatives to restore blood flow are autologous grafts, balloon catheters, and metal stents. However, these treatments can cause several problems in the long run, such as inflammation, thrombosis, and neointimal hyperplasia. 2 Tubular scaffolds based on tissue engineering (TE) techniques have been considered to address these problems and must mimic the structure of blood vessels with proteins of the natural tissue. The scaffolds must also be compatible with endothelial cells for tissue repair. Polymeric biomaterials are often applied for vascular and other soft TE scaffolds, due to the similarity of their properties to those of the natural tissues. 3,4 Proteins, as collagen (Col) and elastin (El), are natural polymers with "green" or environmentally safe properties. These proteins have great appeal to be used as scaffolds considering their biocompatibility, related to the interaction with cell surface receptors, 5 and natural degradation by proteases producing amino acids that are non-toxic and can be easily absorbed by the body. 6 In particular, Col provides structural support and resistance to the extracellular matrix (ECM). 7 It consists of a fibrous protein largely used as a biomaterial, because of its endogeny and interaction

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

A novel technique to produce tubular scaffolds based on collagen and elastin

et al. 2020

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“…Also, the production of free‐standing fibers using these techniques is difficult, as nanofibers are generally suspended along or collected on a fixed substrate. Previously, we developed a rotary jet‐spinning system as a high‐throughput nanofiber fabrication technique . Unlike STEP or touch‐spinning, RJS uses a high‐speed (up to 75 000 rpm) rotating motor to extrude a nonwoven nanofiber network from a micrometer‐sized orifice.…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of Fibrous Nanomaterials Using Pull Spinning

Deravi

Sinatra

Chantre

et al. 2017

Macro Materials & Eng

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catalysts, [11,12] and optical devices. [13][14][15] Such a broad scope of applications demands versatile manufacturing techniques amenable to multiple materials processing and collection conditions. Currently, fiber-fabrication systems can be characterized as melt, [16][17][18] dry, [19,20] wet, [21][22][23] or electrospinning [24,25] -all of which produce nanofibers using high temperature and pressure (melt, dry, and wet spinning) or electric fields (5-20 kV, electrospinning). [24][25][26][27] Once formed, the fibers can be collected and processed using external pumps, alternating applied electric fields, spinnerets, coagulation, and wash chambers, or heated drum rolls to form aligned functional materials. [18,[24][25][26]28,29] Several electrospinning techniques have been developed to further control fiber deposition and structure, producing aligned fibrous nanostructures by minimizing the distance between a charged nozzle and grounded collector. [30][31][32][33][34][35] While these modifications enable geometries which were previously unattainable for electrospun fibers, the technique remains limited in both speed and the range of materials used. Furthermore, harsh reaction environments, The assembly of natural and synthetic polymers into fibrous nanomaterials has applications ranging from textiles, tissue engineering, photonics, and catalysis. However, rapid manufacturing of these materials is challenging, as the state of the art in nanofiber assembly remains limited by factors such as solution polarity, production rate, applied electric fields, or temperature. Here, the design and development of a rapid nanofiber manufacturing system termed pull spinning is described. Pull spinning is compact and portable, consisting of a high-speed rotating bristle that dips into a polymer or protein reservoir and pulls a droplet from solution into a nanofiber. When multiple layers of nanofibers are collected, they form a nonwoven network whose composition, orientation, and function can be adapted to multiple applications. The capability of pull spinning to function as a rapid, point-of-use fiber manufacturing platform is demonstrated for both muscle tissue engineering and textile design.

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“…In addition, the frequency of bead‐on‐string morphology decreases, the fiber quality increases, and the fiber diameter decreases . Additionally, the effect of the molecular weight on fibers was reported by Mindru et al …”

Section: Effects Of Different Parameters On the Fiber Propertiesmentioning

confidence: 80%

Recent development of centrifugal electrospinning

Peng

Liu

Ramakrishna

2016

J of Applied Polymer Sci

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As a high-output nanoscale fiber production method, centrifugal electrospinning (CES) has attracted increasing attention, and this has fostered its quick development. In this article, we review this technique and summarize its mechanism, characteristics, classification, and process equipment. Furthermore, we classify the effects of several CES process parameters on the fiber properties into three different categories. The mechanisms of these effects on the fiber characteristics are analyzed. Finally, the CES issues are summarized, and some strategic solutions and prospects are proposed.

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Morphological aspects of polymer fiber mats obtained by air flow rotary-jet spinning

Cited by 23 publications

References 21 publications

A novel technique to produce tubular scaffolds based on collagen and elastin

A novel technique to produce tubular scaffolds based on collagen and elastin

Design and Fabrication of Fibrous Nanomaterials Using Pull Spinning

Recent development of centrifugal electrospinning

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