Ultra-fast heat dissipating aerogels derived from polyaniline anchored cellulose nanofibers as sustainable microwave absorbers - Archive ouverte HAL Access content directly
Journal Articles Carbohydrate Polymers Year : 2020

Ultra-fast heat dissipating aerogels derived from polyaniline anchored cellulose nanofibers as sustainable microwave absorbers

(1) , (1) , (2) , (3) , (4) , (1) , (1)
1
2
3
4

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.
Fichier principal
Vignette du fichier
Ultra-fast-heat-dissipating-aerogels-derived-from-polyaniline-anchored-cellulose-nanofibers-as-sustainable-microwave-absorbers.pdf (5.1 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02889024 , version 1 (16-09-2020)

Identifiers

Cite

Avinash R. Pai, T. Binumol, Deepu Ambika Gopakumar, Daniel Pasquini, Bastien Seantier, et al.. Ultra-fast heat dissipating aerogels derived from polyaniline anchored cellulose nanofibers as sustainable microwave absorbers. Carbohydrate Polymers, 2020, 246, pp.1-14/116663. ⟨10.1016/j.carbpol.2020.116663⟩. ⟨hal-02889024⟩
133 View
294 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More