High‐Performance Carbon Fibers Prepared by Continuous Stabilization and Carbonization of Electron Beam‐Irradiated Textile Grade Polyacrylonitrile Fibers

König, Simon; Bauch, Volker; Herbert, Christian; Wego, Andreas; Steinmann, Mark; Frank, Erik; Buchmeiser, Michael R.

doi:10.1002/mame.202100484

Cited by 13 publications

(14 citation statements)

References 61 publications

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“…The two-parameter Weibull equation fits the CFs data rather well; however, TC-P S1 CFs (DR 1.16) and HC-P-S CFs (DR 1.12) showed lower Weibull moduli of m = 5.4 and 6.1, respectively, indicating that these samples had lower homogeneity compared to TC-P S2 CFs (DR 1.16) with m = 8.4 and TC-P S3 CFs (DR 1.08) with m = 8.9. Nevertheless, all values were within the range of typical Weibull moduli for CFs, commonly lying between 4 and 10. ,, …”

Section: Results and Discussionmentioning

confidence: 59%

“…Nevertheless, all values were within the range of typical Weibull moduli for CFs, commonly lying between 4 and 10. 13,26,55 The tensile strength of TC-P S1 CFs (DR 1.16) with 2.8 GPa was comparable to the one of standard PAN-CFs (Toray T300) 3.0 GPa. For a better comparison, we measured the mechanical properties of T300 fibers using the same method as for the prepared CFs.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

“…This can be attributed to the different mechanisms during the dehydration and degradation of cellulose and the cyclization reaction of PAN . Since both samples (TC-P S1 CF, HC-P-S CF) showed lower Weibull moduli than the T300 fibers ( m = 5.4 and 6.1 vs 8.8), it is assumed that they had a higher defect ratio. , …”

Section: Results and Discussionmentioning

confidence: 99%

“…11 Since both samples (TC-P S1 CF, HC-P-S CF) showed lower Weibull moduli than the T300 fibers (m = 5.4 and 6.1 vs 8.8), it is assumed that they had a higher defect ratio. 13,52 Carbon Fiber Morphology. SEM images of the obtained CFs are depicted in Figure 6.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Both precursor systems can yield superior carbon fibers for high-end products, while PAN-based CFs with a share of 96–98% are still dominating. PAN used for CF production has some drawbacks, such as a high price of the precursor material, which can be lowered in part using textile PAN. , Besides the economic aspects with an ever-increasing demand for CF materials, the ecological aspects may not be neglected. Thus, there is an urgent need for an inexpensive, more sustainable, and environmentally friendly precursor material for CFs.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Cellulose-Derived Carbon Fibers Using a New Reduced-Pressure Stabilization Method

Vocht

Ota

Frank

et al. 2022

Ind. Eng. Chem. Res.

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We present a new continuous stabilization process for cellulose-derived carbon fibers (CFs) with mechanical properties rivaling those of polyacrylonitrilederived CFs. The novel process enables optimum control over the stabilization process. The effects of process temperature and dwell time on the structure and mechanical properties of the stabilized fibers were investigated by elemental analysis, wide-angle Xray scattering, infrared spectroscopy, scanning electron microscopy, and tensile testing. Laboratory-scale carbonization trials of the stabilized fibers were accomplished in a continuous process at 1400 °C. Received CFs had tensile strengths up to 2.8 GPa and Young's moduli up to 112 GPa. By adjusting the stabilization conditions, the mechanical properties of the resulting CFs can be tuned.

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Section: Results and Discussionmentioning

confidence: 59%

Section: ■ Results and Discussionmentioning

confidence: 95%

Section: Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Preparation of Cellulose-Derived Carbon Fibers Using a New Reduced-Pressure Stabilization Method

Vocht

Ota

Frank

et al. 2022

Ind. Eng. Chem. Res.

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Lignin/Poly(vinylpyrrolidone) Multifilament Fibers Dry‐Spun from Water as Carbon Fiber Precursors

Kreis,

Frank,

Clauß

et al. 2023

Macro Materials & Eng

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The preparation of lignin‐based carbon fibers by dry spinning from aqueous solution followed by stabilization and continuous carbonization to endless yarns is reported. The influence of carbonization temperature and draw ratio on the morphology and mechanical properties of the final carbon fibers is investigated by single‐fiber testing, wide‐angle X‐ray scattering, scanning electron microscopy, and Raman spectroscopy. A draw ratio of 5% (1.05) with a carbonization temperature of 1400 °C leads to the best mechanical properties. The resulting multifilament carbon fibers have an average diameter between 10–12 µm, an average tensile strength of 1.30 ± 0.32 GPa, a Young's modulus of 101 ± 18 GPa, and an elongation at break of 1.31 ± 0.23%. The maximum Weibull strength (𝜎0) is 1.04 GPa with a Weibull modulus (m) of 5.1. The use of a water‐soluble system is economically advantageous; also, unlike melt‐spun lignin fibers, the dry‐spun precursor fibers can be thermally converted without any additional crosslinking step.

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Activated carbon fibers from recycled acrylic and cotton for carbon dioxide capture

Kocak,

Akduman,

Yanik

et al. 2024

Polymer Engineering & Sci

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In this study, activated carbon fibers (ACFs) were produced from mechanically recycled acrylic (PAN) and cotton (CO) fibers and their blend (PAN/CO) in felt form as an adsorbent for carbon dioxide capture. For this purpose, stabilization, carbonization, and chemical activation processes were applied consecutively. The effects of recycled fiber type, carbonization temperature, and activation agent impregnation ratio were investigated. The resultant ACFs were characterized by elemental analysis, SEM, FTIR, XPS, and BET analyses, and carbon dioxide adsorption capacity was tested. It was observed that the fibrous structure of all samples was preserved at all stages, although the fiber diameters were reduced. The maximum quantity of adsorbed CO2 was found to be 3.79, 3.47, and 3.28 mmol CO2/g for recycled PAN, CO, and PAN/CO based samples, respectively, at 298 K at a relative pressure of 0.989. It was conducted that the carbon dioxide adsorption performance was affected by both the ACF surface area and the nitrogen content in the structure. It was concluded that recycled fiber‐based ACFs as CO2 adsorbents could be successfully produced with reasonable adsorption performance as a sustainable alternative.Highlights Activated carbon fibers were produced from recycled acrylic and cotton fibers Fibrous structure was preserved, but fiber diameters decreased Reasonable carbon dioxide adsorption capacity was attained Recycled fiber‐based ACFs could be a sustainable alternative to CO2 adsorbents

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High‐Performance Carbon Fibers Prepared by Continuous Stabilization and Carbonization of Electron Beam‐Irradiated Textile Grade Polyacrylonitrile Fibers

Cited by 13 publications

References 61 publications

Preparation of Cellulose-Derived Carbon Fibers Using a New Reduced-Pressure Stabilization Method

Preparation of Cellulose-Derived Carbon Fibers Using a New Reduced-Pressure Stabilization Method

Lignin/Poly(vinylpyrrolidone) Multifilament Fibers Dry‐Spun from Water as Carbon Fiber Precursors

Activated carbon fibers from recycled acrylic and cotton for carbon dioxide capture

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