Macrostructure of Polyacrylonitrile Nanofibers Produced by Electrospinning

Sidorina, A. I.; Druzhinina, T. V.

doi:10.1007/s10692-016-9693-6

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…The FTIR band at 1645 cm −1 was generated by a new stretching vibration and the bending vibration absorption peak of –NH. 34 This may have resulted from a new amidine formed on the Amino-PAN fabric. As shown in Figure 1, the intensities of the characteristic absorption peaks corresponding to −NH (1645 cm −1 ) and −NH 2 (3430 cm −1 ) increased gradually with increasing modification temperature.…”

Section: Resultsmentioning

confidence: 99%

“…For the original fabric, a strong diffraction peak at 2θ = 16.9° and a weak diffraction peak at 2θ = 29.73° are associated with (1010) reflections and (1120) reflections, respectively. 33,34 XRD spectra of the original PAN fabric and Amino-PAN fabrics (modification at 90°C, 100°C, and 110°C) are characterized by both diffraction angles with weak peak shifts or variations in peak intensities. The peak at 2θ = 29.73° is absent from the spectrum of the PAN fabric modified at 120°C and the peak at 2θ = 16.9° has been significantly weakened.…”

Section: Resultsmentioning

confidence: 99%

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Graphene oxide-coated amino-modified polyacrylonitrile to fabricate highly conductive fabrics

Cao

Wang

Zhang

2021

Textile Research Journal

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Graphene conductive polyacrylonitrile (PAN) substrate is an important material, owing to its high strength, flexibility, and comfort. In this work, a PAN fabric was cationized with triethylene tetramine (TETA) for increased adsorption of anionic graphene oxide (GO), which mainly forms ionic bonds. The TETA-modified PAN (Amino-PAN) fabric was then treated with GO using a dipping method followed by in situ reduction of GO to obtain reduced graphene oxide (RGO). The electric conductivity of Amino-PAN fabrics was increased with the increasing of TETA modification temperature from 90°C to 110°C. A surface electric resistance of 0.61 kΩ cm−1 was obtained for 2 g L−1 GO and TETA modification performed at 110°C for 2 h. This resistance was considerably lower than that of the original PAN fabric for one cycle of the dipping–reduction GO treatment (1RGO-PAN, 42.69 kΩ cm−1) and six cycles of the dipping–reduction GO treatment (6RGO-PAN, 1.52 kΩ cm−1). The results revealed that the anionic GO was more easily adsorbed on the surface of the Amino-PAN fabrics than on the original PAN fabrics. The surface electric resistance of the 1RGO-Amino-PAN fabrics slightly increased from 0.61 to 0.79 kΩ cm−1 after 30 washing cycles. The results showed that the RGO-coated Amino-PAN fabric had excellent washability. Furthermore, the TETA modification process reduced the dipping–reduction times of the GO finishing PAN fabrics, and can be easily used in the production of RGO-based flexible conductive material.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Graphene oxide-coated amino-modified polyacrylonitrile to fabricate highly conductive fabrics

Cao

Wang

Zhang

2021

Textile Research Journal

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“…Cyano-containing polymers are a large group of fascinating materials with unique mechanical, electrical, and coordination properties, which are widely applicable in fibrous materials, 1 electrical conductivity, 2 solar cells 3 and covalent organic frameworks. 4 Cyano-containing polymers are generally prepared by the direct polymerization of cyano-containing monomers through radical polymerization, 5,6 Suzuki coupling, 7 pressure-induced polymerization, 8,9 triple-bond-based polymerization, 10 and the hydro(solvo)thermal synthesis method.…”

Section: Introductionmentioning

confidence: 99%

Catalyst-free multicomponent polymerization of aldehydes, amines and trimethylsilyl cyanide toward poly(α-aminonitrile)s

Cheng,

Wang,

Ding

et al. 2024

Polym. Chem.

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“…Pure PAN fibers have been prepared by an electrospinning technique with diameters in the nano meter scale (Yördem et al, 2008;Sidorina and Druzhinina, 2016), but the limitation of fiber dimensions, the non-uniformity due to fast solvent evaporation and the randomness of the spinning process remain challenging tasks. Wet spinning or dry-jetwet spinning are alternative methods to prepare PAN fibers, where the spinnerets-extruded PAN is brought into a coagulation bath to precipitate the polymer (Mahmod et al, 2011;Sreekumar et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Controlled preparation and chemical actuation of polyacrylonitrile fibers

Aguila López,

Sánchez Rivera,

Pescador Rojas

et al. 2023

BIOTECNIA

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Pure polyacrylonitrile (PAN) fibers with diameter size at micrometric scale were obtained and collected radially using an immersion-jet wet spinning .system. This technique is a fast and easy approach to fabricate micrometric PAN fibers. The diameter of the fiber can be easily controlled by adjusting the size of the spinneret. Uniform, smooth and continuous PAN microfibers were suitable modified by thermal stabilization and alkaline saponification to obtain pH-sensitive fibers. The effect of diameter size fiber on the chemical actuation behavior was investigated in terms of length change characteristics under the influence of pH solution. The microfibers showed expanding/contracting behavior and force generation stimulated by changes in the environment pH. The fibers structural and chemical properties were characterized using the FT-IR spectroscopy and SEM microscopy techniques.

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Macrostructure of Polyacrylonitrile Nanofibers Produced by Electrospinning

Cited by 6 publications

References 3 publications

Graphene oxide-coated amino-modified polyacrylonitrile to fabricate highly conductive fabrics

Graphene oxide-coated amino-modified polyacrylonitrile to fabricate highly conductive fabrics

Catalyst-free multicomponent polymerization of aldehydes, amines and trimethylsilyl cyanide toward poly(α-aminonitrile)s

Controlled preparation and chemical actuation of polyacrylonitrile fibers

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