Scalable polyaniline-bridged multifunctional bamboo fiber/carbon nanotubes composite foam via ambient drying for thermal protection and electromagnetic shielding
- 1Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
- 2Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China; Department of Chemical Engineering, University of New Brunswick, New Brunswick E3B 5A3, Canada
- 3Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China; Corresponding author.
Abstract
The scalable development of sustainable, high-performance cellulose foams is often impeded by energy-intensive drying processes and the structural vulnerability of porous networks under ambient conditions. In this paper, we report an ambient-pressure drying strategy to fabricate polyaniline-bridged multifunctional bamboo fiber (BF)/multiwalled carbon nanotubes (MWCNTs) composite foam. By employing 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) oxidized cellulose nanofibril (TOCNF) to uniformly disperse MWCNTs within the BF network, a hierarchical porous architecture with mechanical robustness and high electrical conductivity was constructed through ice-templating, Zn 2+ crosslinking, and hydrogen bonding, effectively resisting capillary-force-induced collapse without the need for freeze-drying or solvent exchange. The optimized Zn 2+ crosslinked polyaniline-bridged multi-walled carbon nanotubes/bamboo fiber/TOCNF composite foam (Zn-P 3 M 4 BC 1 ) exhibited an exceptional electromagnetic interference shielding effectiveness of 61.56 dB, with an absolute specific shielding efficiency (SSE/d) of 2375.2 dB·cm 2 /g, surpassing most reported carbon-based and polyaniline (PANI)-based aerogels. Furthermore, the synergistic interplay between MWCNTs/PANI and phytic acid endowed composite foam with excellent flame retardancy (limiting oxygen index = 56.8%), low thermal conductivity (0.085 W/(m·K)), and reliable electrothermal and infrared camouflage performance. Overall, this work provides a scalable and energy-efficient route to multifunctional cellulose-based foams for electromagnetic protection, thermal insulation and adaptive infrared camouflage.
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BibTeX
@article{feng2026scalable,
title = {{Scalable polyaniline-bridged multifunctional bamboo fiber/carbon nanotubes composite foam via ambient drying for thermal protection and electromagnetic shielding}},
author = {Yufan Feng and Yaqian Yu and Xueyi Zhou and Tingting Xu and Huining Xiao and Zhiguo Wang and Hongqi Dai and Huiyang Bian},
journal = {Journal of Bioresources and Bioproducts},
year = {2026},
month = oct,
doi = {10.1016/j.jobab.2026.100299},
url = {https://doi.org/10.1016/j.jobab.2026.100299},
note = {CC BY},
}
RIS
TY - JOUR
TI - Scalable polyaniline-bridged multifunctional bamboo fiber/carbon nanotubes composite foam via ambient drying for thermal protection and electromagnetic shielding
AU - Yufan Feng
AU - Yaqian Yu
AU - Xueyi Zhou
AU - Tingting Xu
AU - Huining Xiao
AU - Zhiguo Wang
AU - Hongqi Dai
AU - Huiyang Bian
PY - 2026
DA - 2026/10/25
JO - Journal of Bioresources and Bioproducts
DO - 10.1016/j.jobab.2026.100299
UR - https://doi.org/10.1016/j.jobab.2026.100299
AB - The scalable development of sustainable, high-performance cellulose foams is often impeded by energy-intensive drying processes and the structural vulnerability of porous networks under ambient conditions. In this paper, we report an ambient-pressure drying strategy to fabricate polyaniline-bridged multifunctional bamboo fiber (BF)/multiwalled carbon nanotubes (MWCNTs) composite foam. By employing 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) oxidized cellulose nanofibril (TOCNF) to uniformly disperse MWCNTs within the BF network, a hierarchical porous architecture with mechanical robustness and high electrical conductivity was constructed through ice-templating, Zn 2+ crosslinking, and hydrogen bonding, effectively resisting capillary-force-induced collapse without the need for freeze-drying or solvent exchange. The optimized Zn 2+ crosslinked polyaniline-bridged multi-walled carbon nanotubes/bamboo fiber/TOCNF composite foam (Zn-P 3 M 4 BC 1 ) exhibited an exceptional electromagnetic interference shielding effectiveness of 61.56 dB, with an absolute specific shielding efficiency (SSE/d) of 2375.2 dB·cm 2 /g, surpassing most reported carbon-based and polyaniline (PANI)-based aerogels. Furthermore, the synergistic interplay between MWCNTs/PANI and phytic acid endowed composite foam with excellent flame retardancy (limiting oxygen index = 56.8%), low thermal conductivity (0.085 W/(m·K)), and reliable electrothermal and infrared camouflage performance. Overall, this work provides a scalable and energy-efficient route to multifunctional cellulose-based foams for electromagnetic protection, thermal insulation and adaptive infrared camouflage.
SN - 2369-9698
ER -