Thermal phase transition controlling electromagnetic wave absorption behavior of PAN fiber derived porous magnetic absorber

Zhao, Yixuan; Lou, Zhichao; Wang, Qiuyi; Wang, Yihua; Sun, Wei; Li, Yanjun

doi:10.1007/s10854-021-05864-z

Cited by 7 publications

(2 citation statements)

References 57 publications

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“…In this study, the modulus of elasticity showed the same increasing tendency. It can be attributed to the change of matrix and arrangement of cellulose microfibrils in the bamboo cell walls [ 36 , 37 ]. Nanoindentation is a useful technology for measuring the polymers’ hardness and modulus of elasticity.…”

Section: Resultsmentioning

confidence: 99%

Change in Micro-Morphology and Micro-Mechanical Properties of Thermally Modified Moso Bamboo

et al. 2022

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In recent years, saturated steam heat treatment has been considered as an environmentally friendly and cost-effective modification method compared with traditional heat treatment media. In this study, bamboo was treated by saturated steam, and the change in chemical composition, cellulose crystallinity index, micro-morphology, and micromechanical properties were analyzed by a wet chemistry method, Fourier transform infrared (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), nanoindentation, and so on. Results illustrated that the parenchyma cell walls were distorted due to the decomposition of hemicellulose and cellulose in bamboo samples. As expected, the hemicellulose and cellulose content decreased, whereas the lignin content increased significantly. In addition, the cellulose crystallinity index and thus the micromechanical properties of bamboo cell walls increased. For example, the hardness increased from 0.69 GPa to 0.84 GPa owing to the enhanced crystallinity index and lignin content.

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Section: Resultsmentioning

confidence: 99%

Change in Micro-Morphology and Micro-Mechanical Properties of Thermally Modified Moso Bamboo

et al. 2022

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“…The preparation of 3D carbon fiber networks by electrospinning and calcination is a more convenient and controllable technique compared with the template method. Li's group [145] synthesized porous magnetic absorbers via carbonizing Fe(acac) 3 /polyacrylonitrile (PAN) composite fiber. After carbonization, the Fe(acac) 3 /PAN composites obtained by electrospinning were transformed into Fe 3 O 4 /Fe 3 C-supported porous carbon.…”

Section: Reviewsmentioning

confidence: 99%

Recent advance in three-dimensional porous carbon materials for electromagnetic wave absorption

et al. 2022

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With the increasingly serious electromagnetic wave (EMW) pollution, the development of high-performance EMW absorbing materials (EWAMs) has become a hot topic. Carbon-based EWAMs have excellent chemical stability, high electrical conductivity, and strong dielectric loss. In particular, three-dimensional (3D) porous carbon-based EWAMs have been widely developed in the EMW absorption field. The 3D porous structure not only reduces the materials' mass density, but also improves the multiple reflections of incident EMWs and impedance matching. The carbon-based EWAMs are thus expected to achieve the goals of low density, low thickness, wide absorption bandwidth, and strong absorption. Herein, we first restated the relevant theoretical basis and evaluation methods. Then, we summarized the recent research progress of 3D porous carbon-based EWAMs with the source of the materials as the main clue. Some unique and novel viewpoints were highlighted. Finally, the challenges and prospects of 3D porous carbon-based EWAMs were put forward, which is helpful for guiding a further development of high-performance EWAMs.

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Multifunction lignin-based carbon nanofibers with enhanced electromagnetic wave absorption and surpercapacitive energy storage capabilities

Zhu

Bai

et al. 2022

International Journal of Biological Macromolecules

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Thermal phase transition controlling electromagnetic wave absorption behavior of PAN fiber derived porous magnetic absorber

Cited by 7 publications

References 57 publications

Change in Micro-Morphology and Micro-Mechanical Properties of Thermally Modified Moso Bamboo

Change in Micro-Morphology and Micro-Mechanical Properties of Thermally Modified Moso Bamboo

Recent advance in three-dimensional porous carbon materials for electromagnetic wave absorption

Multifunction lignin-based carbon nanofibers with enhanced electromagnetic wave absorption and surpercapacitive energy storage capabilities

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