Positioning and Aligning Electrospun PAN Fibers by Conductive and Dielectric Substrate Patterns

Hellert, Christian; Storck, Jan Lukas; Kaltschmidt, Bernhard Peter; Hütten, Andreas; Ehrmann, Andrea

doi:10.1002/masy.202000213

Cited by 8 publications

(11 citation statements)

References 20 publications

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“…This diverts the airflow due to the cylinder rotation and also amplifies the electronic field in a thin gap between them, in this way providing alignment and position control of the fibers. Moreover, nanofiber layers partially grown on conductive structures and partly consolidated can lead to an interesting mixture of aligned and chaotic layers, with different mechanical properties [33].…”

Section: Electrospinningmentioning

confidence: 99%

Electrospun Nanofibrous Membranes for Tissue Engineering and Cell Growth

Tanzli

Ehrmann

2021

Applied Sciences

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In biotechnology, the field of cell cultivation is highly relevant. Cultivated cells can be used, for example, for the development of biopharmaceuticals and in tissue engineering. Commonly, mammalian cells are grown in bioreactors, T-flasks, well plates, etc., without a specific substrate. Nanofibrous mats, however, have been reported to promote cell growth, adhesion, and proliferation. Here, we give an overview of the different attempts at cultivating mammalian cells on electrospun nanofiber mats for biotechnological and biomedical purposes. Starting with a brief overview of the different electrospinning methods, resulting in random or defined fiber orientations in the nanofiber mats, we describe the typical materials used in cell growth applications in biotechnology and tissue engineering. The influence of using different surface morphologies and polymers or polymer blends on the possible application of such nanofiber mats for tissue engineering and other biotechnological applications is discussed. Polymer blends, in particular, can often be used to reach the required combination of mechanical and biological properties, making such nanofiber mats highly suitable for tissue engineering and other biotechnological or biomedical cell growth applications.

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Section: Electrospinningmentioning

confidence: 99%

Electrospun Nanofibrous Membranes for Tissue Engineering and Cell Growth

Tanzli

Ehrmann

2021

Applied Sciences

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“…Optical micrographs of the electro-spun fibres were captured using (Axioskop 2, Carl Zeiss, UK) with a digital camera (AxioCam HRc, Carl Zeiss, UK). Image analysis is used extensively to quantify the diameter 60 – 65 of electro-spun fibres. Image J software (NIH, USA) was used to measure the diameter of the eletcro-spun fibres.…”

Section: Methodsmentioning

confidence: 99%

Electro-spinning of highly-aligned polyacrylonitrile nano-fibres with continuous spooling

Shao

Fernando

2021

Sci Rep

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This paper reports on a new configuration for producing highly-aligned electro-spun fibres that can be produced on a static substrate or one where it is hauled off and spooled continuously to enable the production of continuous lengths. The fixture consists of a Vee-shaped polytetrafluorethylene shield at 60° with a 1 cm wide integral rectangular base that is mounted on a copper disk with a 10 cm diameter. Specified concentrations of polyacrylonitrile in dimethyl sulfoxide were electro-spun on to a strip of cellulose paper. In the static setup, approximately 91% of the fibres were deposited to within 3°. When the spooling rig was used, a tape of the cellulose paper was hauled off at 0.07 mm/min, 78% of the fibres were aligned to within 3°. Simulations of the conventional and Vee-shield electro-spinning setups were undertaken and they provided corroboration for the experimental observations with regard to the mechanism responsible for fibre alignment. The feasibility of using this technique to produce 0°/− 45°/+ 45° stacked layers of aligned fibre preform is demonstrated.

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“…However, this type of electrode is unsuitable for use in wearable devices because it can fracture and delaminate while bending. Typically, carbon-based cloth, fibers, and metal foils are used to make flexible electrode materials that are used in conjunction with various polymers such as PAN and polyacrylamide (PAM) to support flexible substrate shapes [30][31][32]. The current study is focused on improving the electrochemical performance of composite materials obtained by NiCu(CO 3 )(OH) 2 on a PAN nanofiber substrate.…”

Section: Articlementioning

confidence: 99%

Hybrid nanostructured PAN@NiCu(CO3)(OH)2 composite for flexible high-performance supercapacitors

Lee

Verma

Lê

et al. 2021

Journal of Materials Research

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A binder-free porous NiCu(CO3)(OH)2 composite was grown on a polyacrylonitrile (PAN) nanofiber substrate using a hydrothermal method. PAN nanofibers were fabricated by the electrospinning method, thus producing a substrate with a nano-sized diameter and high specific surface area. The composite NiCu(CO3)(OH)2 nanowires on PAN nanofibers provided the large specific surface area required for the redox reaction. Transition metal-based nanowires and nano-sized PAN substrates indicate a synergistic effect in electrochemical performance. The NiCu(CO3)(OH)2 on PAN composite showed a remarkable maximum specific capacity of 870 mAh g−1 at a current density of 3 A g−1, which indicates that it can be a suitable electrode material. In addition, an asymmetric supercapacitor with NiCu(CO3)(OH)2 on PAN composite as the cathode and graphene as the anode showed an ultra-high energy density of 89.2 W h kg−1 at a power density of 835 W kg−1 and a capacitance retention of 90.1% after 5000 cycles. Graphic abstract

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Positioning and Aligning Electrospun PAN Fibers by Conductive and Dielectric Substrate Patterns

Cited by 8 publications

References 20 publications

Electrospun Nanofibrous Membranes for Tissue Engineering and Cell Growth

Electrospun Nanofibrous Membranes for Tissue Engineering and Cell Growth

Electro-spinning of highly-aligned polyacrylonitrile nano-fibres with continuous spooling

Hybrid nanostructured PAN@NiCu(CO3)(OH)2 composite for flexible high-performance supercapacitors

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