Cellulose Nanofibers/Na-Bentonite and MXene Multilayer Alternating Films with Electromagnetic Interference Shielding 


Vol. 27,  No. 2, pp. 617-628, Feb.  2026
10.1007/s12221-025-01243-1


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  Abstract

The rapid advancement of information technology has led to an increase in electromagnetic interference (EMI) issues, as electronic devices are now widely utilized, requiring materials with greater versatility. This study developed an efficient preparation method utilizing alternating vacuum filtration (AVF) technology to overcome this issue. Through the precise control of the deposition sequence of cellulose nanofibers (CNF)/Na-bentonite (NB) and MXene conductive layers, this study successfully prepared CNF/NB–MXene composite films with a well-structured alternating layered structure. The composite film exhibited a distinctive "brick–mortar" architecture, imparting favorable mechanical properties (i.e., 8.17 MPa tensile strength). Measuring 41 μm thick, the composite film exhibited a conductivity of 189.6 S m–1, along with EMI shielding effectiveness (SE) of 34.3 dB and SE per unit thickness (SE/t) of 8365.85 dB cm–1 in the X-band. Furthermore, the composite film demonstrated a high limiting oxygen index (LOI) of 36.5% and a residual carbon content exceeding 70%, which indicated exceptional flame retardancy. Consequently, the alternating layered composite film exhibited superior EMI performance and flame-retardant performance, making it particularly advantageous in harsh environments such as high temperatures.

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  Cite this article

[IEEE Style]

S. Qu, T. Lin, X. Yin, L. Xing, C. Li, G. Peng, "Cellulose Nanofibers/Na-Bentonite and MXene Multilayer Alternating Films with Electromagnetic Interference Shielding," Fibers and Polymers, vol. 27, no. 2, pp. 617-628, 2026. DOI: 10.1007/s12221-025-01243-1.

[ACM Style]

Sitian Qu, Tao Lin, Xuefeng Yin, Luyi Xing, Chenyang Li, and Guoqiang Peng. 2026. Cellulose Nanofibers/Na-Bentonite and MXene Multilayer Alternating Films with Electromagnetic Interference Shielding. Fibers and Polymers, 27, 2, (2026), 617-628. DOI: 10.1007/s12221-025-01243-1.

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