Fixing PAN Nanofiber Mats during Stabilization for Carbonization and Creating Novel Metal/Carbon Composites

Sabantina, Lilia; Rodríguez-Cano, Miguel Ángel; Klöcker, Michaela; García-Mateos, Francisco J.; Ternero-Hidalgo, Juan José; Mamun, Al; Beermann, Friederike; Schwakenberg, Mona; Voigt, Anna-Lena; Rodríguez-Mirasol, José; Cordero, Tomás; Ehrmann, Andrea

doi:10.3390/polym10070735

Cited by 49 publications

(63 citation statements)

References 39 publications

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“…In both nanofiber mats depicted in Figures 2 and 3, the typical increase of the fiber diameter is visible due to relaxation of the internal stress in the nanofibers caused by the severe stretching during electrospinning [77]. Since the nanofiber mats were not mechanically fixed or even actively stretched during stabilization, this behavior can be expected, as discussed in detail in [77].…”

Section: Morphological Investigationsmentioning

confidence: 86%

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Magnetic Properties of Electrospun Magnetic Nanofiber Mats after Stabilization and Carbonization

et al. 2020

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Magnetic nanofibers are of great interest in basic research, as well as for possible applications in spintronics and neuromorphic computing. Here we report on the preparation of magnetic nanofiber mats by electrospinning polyacrylonitrile (PAN)/nanoparticle solutions, creating a network of arbitrarily oriented nanofibers with a high aspect ratio. Since PAN is a typical precursor for carbon, the magnetic nanofiber mats were stabilized and carbonized after electrospinning. The magnetic properties of nanofiber mats containing magnetite or nickel ferrite nanoparticles were found to depend on the nanoparticle diameters and the potential after-treatment, as compared with raw nanofiber mats. Micromagnetic simulations underlined the different properties of both magnetic materials. Atomic force microscopy and scanning electron microscopy images revealed nearly unchanged morphologies after stabilization without mechanical fixation, which is in strong contrast to pure PAN nanofiber mats. While carbonization at 500 °C left the morphology unaltered, as compared with the stabilized samples, stronger connections between adjacent fibers were formed during carbonization at 800 °C, which may be supportive of magnetic data transmission.

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Section: Morphological Investigationsmentioning

confidence: 86%

“…Since the nanofiber mats were not mechanically fixed or even actively stretched during stabilization, this behavior can be expected, as discussed in detail in Ref. 77.…”

Section: Simulationsmentioning

confidence: 96%

Magnetic Properties of Electrospun Magnetic Nanofiber Mats after Stabilization and Carbonization

et al. 2020

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“…Unlike the literature finding, hot press process affected the fiber diameter of PAN nanofibers. Sabantina et al . observed that the diameter of the PAN nanofiber on the polypropylene substrate increased while the PAN nanofiber diameter stayed constant on aluminum foil after stabilization under 280 °C.…”

Section: Resultsmentioning

confidence: 99%

Electrospun Polyacrylonitrile Nanofibrous Membranes for Point‐of‐Use Water and Air Cleaning

Roche

Yalçinkaya

2019

ChemistryOpen

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Novel electrospun polyacrylonitrile (PAN) nanofibrous membranes were prepared by using heat‐press lamination under various conditions. The air permeability and the burst‐pressure tests were run to select the membranes for point‐of‐use air and water cleaning. Membrane characterization was performed by using scanning electron microscopy, contact angle, and average pore size measurements. Selected membranes were used for both air dust filtration and cross‐flow water filtration tests. Air dust filter results indicated that electrospun PAN nanofibrous membranes showed very high air‐dust filtration efficiency of more than 99.99 % in between PM0.3 and PM2.5, whereas cross‐flow filtration test showed very high water permeability over 600 L/(m2hbar) after 6 h of operation. Combining their excellent efficiency and water permeability, these membranes offer an ideal solution to filter both air and water pollutants.

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“…between approximately 14% and 16%, while lower concentrations of pure PAN usually result in beads along the fi bres [36]. Parts of all samples were aft erwards stabilised in a muffl e oven B150 (Nabertherm, Lilienthal, Germany), approaching the typical stabilisation temperature of 280 °C with the heating rate of 1 K/min [14,24,25]. Parts of the stabilised samples were aft erwards carbonised at 500 °C or 800°, respectively, approached with the heating rate of 10 K/min in a furnace (Carbolite Gero, Neuhausen, Germany) under the nitrogen fl ow of 150 mL/min (STP).…”

Section: Chemical and Morphological Modifi Cation Of Pan Nanofi Brousmentioning

confidence: 99%

“…biopolymers such as poly(ethylene oxide) [4], gelatine [6] or chitosan [7], but also other polymers such as polycaprolactone [8], poly(vinyl alcohol) [9] or polyacrylonitrile (PAN) [10], as well as blends with diff erent polymers and nonpolymeric nanoparticles [11]. PAN is of high interest for electrospinning not only as it can be electrospun from the low-toxic solvent dimethyl sulfoxide (DMSO), but also as it is a typical precursor for carbon nanofi bres [12][13][14]. Such carbon nanofi bres can be used as fi llers in composites, but due to their conductive properties also as parts of batteries, supercapacitors or dye sensitized solar cells [13,[15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Chemical and Morphological Modification of PAN Nanofibrous Mats with Addition of Casein after

Diestelhorst¹,

Mance²,

Mamun³

et al. 2020

TEK

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Electrospun polyacrylonitrile (PAN) nanofi brous mats belong to typical precursor materials of carbon nanofibres. They have, however, the problem that they need to be fi xed or even stretched during stabilisation and ideally also during carbonisation in order to avoid undesired conglutinations and deformations of the original nanofi bre morphology, resulting in brittle behaviour of the macroscopic nanofi brous mat, which impedes several applications. In an earlier investigation, blending PAN with ZnO was shown to increase fi bre diameters and lead to unproblematic stabilisation and carbonisation of nanofi brous mats. ZnO, on the other hand, may have a negative impact on biotechnological applications such as tissue engineering. Here, we thus report on the morphological and chemical modifi cations due to blending PAN electrospinning solutions with diff erent amounts of casein. By optimising the PAN : casein ratio, relatively thick, straight nanofibres are obtained, which can be stabilised and carbonised unambiguously, without the well-known negative impact on cell adhesion due to the addition of ZnO.Elektropredene nanovlaknate koprene iz poliakrilonitrila (PAN) predstavljajo tipične prekurzorje za izdelavo ogljikovih nanovlaken. Med stabilizacijo in po možnosti tudi med karbonizacijo morajo biti pritrjene, da bi lahko preprečili neželeno zlepljenje in deformacijo prvotne nanovlaknate oblike, ki vodi v krhkost makroskopske nanovlaknate koprene in zmanjša možnosti njene uporabe. V predhodni raziskavi je bilo ugotovljeno, da mešanje PAN z ZnO vpliva na povečanje premera vlaken in omogoči stabilizacijo ter karbonizacijo nanovlaknatih kopren. ZnO pa lahko po drugi strani negativno vpliva na biotehnološke aplikacije, kot je tkivni inženiring. V članku so zato predstavljene morfološke in kemijske modifi kacije, ki so bile dosežene z uporabo predilnih raztopin za elektropredenje PAN z dodatkom različnih količin kazeina. Z optimizacijo razmerja PAN : kazein dobimo relativno debela, ravna nanovlakna, ki jih je moč stabilizirati in karbonizirati, brez da bi zaradi dodatka ZnO prišlo do dobro znanega negativnega vpliva na celično adhezijo.

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Fixing PAN Nanofiber Mats during Stabilization for Carbonization and Creating Novel Metal/Carbon Composites

Cited by 49 publications

References 39 publications

Magnetic Properties of Electrospun Magnetic Nanofiber Mats after Stabilization and Carbonization

Magnetic Properties of Electrospun Magnetic Nanofiber Mats after Stabilization and Carbonization

Electrospun Polyacrylonitrile Nanofibrous Membranes for Point‐of‐Use Water and Air Cleaning

Chemical and Morphological Modification of PAN Nanofibrous Mats with Addition of Casein after

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