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Journal articles
Ultra-fast heat dissipating aerogels derived from polyaniline anchored cellulose nanofibers as sustainable microwave absorbers
Abstract : Electromagnetic (EM) pollution is ubiquitous and has soared to a great extent in the past few decades. The use of plant sourced cellulose nanofibers to fabricate sustainable and high performance electromagnetic shielding materials is foreseen as a green solution by the electronics industry to address this unseen pollutant. In this view, we report a facile and environmentally benign strategy to synthesize ultra-light and highly conductive aerogels derived from cellulose nanofibers (CNF) decorated with polyaniline (PANI) via a simple in-situ polymerization and subsequent freeze drying process devoid of any volatile organic solvents. The obtained conductive aerogels exhibited density as low as 0.01925 g/cc with a maximum EMI shielding value −32 dB in X band region. These porous shields demonstrated strong microwave absorption behavior (95 %) with minimal reflection (5 %) coupled with high specific EMI SE value ∼1667 dB.cm3. g−1 which make these aerogels a potential candidate for use in telecommunication, military and defense applications.
Cited literature [66 references]
https://hal-mines-albi.archives-ouvertes.fr/hal-02889024
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Submitted on : Wednesday, September 16, 2020 - 3:13:14 PM
Last modification on : Wednesday, April 6, 2022 - 5:14:08 PM
Long-term archiving on: : Thursday, December 3, 2020 - 8:27:04 AM
Contributor : Imt Mines Albi Imt Mines Albi Connect in order to contact the contributor
Submitted on : Wednesday, September 16, 2020 - 3:13:14 PM
Last modification on : Wednesday, April 6, 2022 - 5:14:08 PM
Long-term archiving on: : Thursday, December 3, 2020 - 8:27:04 AM
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