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Comparative study on pyrolytic transformation mechanism of ANFs-derived carbon membrane for electromagnetic interference shielding application

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Abstract

Selecting suitable precursor and exploring controllable carbonization process is crucial to carbon materials, especially for carbon-based material in electromagnetic interference shielding application. However, carbon materials are primarily used in the forms of powders, which remains big challenge in developing continuous ones. Herein, large-scale aramid nanofibers (ANFs)-derived carbon membrane was developed for the first time. Influence of pyrolysis temperature on chemical constitution and crystalline structure during carbonization process was investigated. The results showed that the decomposition stage of ANFs freestanding membrane begun at ~ 474 °C, while the reconstruction stage begun at ~ 600 °C. Besides, the rupture of amide bonds occurred around 500 °C, which was validated by disappearance of C=O groups. Moreover, the declining integrated intensities ID/IG, and the sharp rising electrical conductivity of demonstrated progressive aromatization and ring condensation. In addition, the microgrooves with an average diameter of ~ 40 nm were formed during the carbonization. Subsequently, the ANFs-derived carbon membrane exhibited superior conductivity (123.8 S cm−1) and electromagnetic shielding effectiveness value of 16 dB (X band) with thickness of 28 μm. This work provided feasible strategy in fabricating carbon-based membrane for advanced electronic devices.

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Acknowledgements

The authors sincerely appreciates for the financial support from the National Natural Science Foundation of China (Grant No. 51803110), the National Key Research and Development Plan (Grant No. 2017YBF0308302), Shaanxi Natural Science Basic Research Program (Grant No. 2019JQ-010, 2020JQ-724), the Opening Foundation of Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry (Grant No. KFKT2019-10), and Zhejiang Province Key Research and Development Project (Grant No. 2019C04008). Finally, the authors thank the inimitable support of QW in the toughest times. IOP Conference Series: Materials Science and Engineering, 810(5), 12019 (2020).

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  1. Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Key Laboratory of Paper Based Functional Materials of China National Light Industry, National Demonstration Center for Experimental Light Chemistry Engineering Education, College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, No. 6, Xuefu Road, Xi’an, 710021, People’s Republic of China

    Fan Xie, Fengfeng Jia, Longhai Zhuo, Zhanfan Jin, Danni Wang & Zhaoqing Lu

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  1. Fan Xie
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Xie, F., Jia, F., Zhuo, L. et al. Comparative study on pyrolytic transformation mechanism of ANFs-derived carbon membrane for electromagnetic interference shielding application. J Mater Sci: Mater Electron 32, 7090–7105 (2021). https://doi.org/10.1007/s10854-021-05418-3

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