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Moučka, Robert
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Publications (8/8 displayed)
- 2023Flexible, ultrathin and light films from one-dimensional nanostructures of polypyrrole and cellulose nanofibers for high performance electromagnetic interference shieldingcitations
- 2020Effect of PANI and PPy on electrochemical performance of rGO/ZnMn2O4 aerogels as electrodes for supercapacitorscitations
- 2017A highly flexible supercapacitor based on MnO2/RGO nanosheets and bacterial cellulose-filled gel electrolytecitations
- 2016In situ preparation of bacterial cellulose reinforced hydrogel electrolyte for flexible supercapacitors
- 2016Ferrofluid for radiofrequency capacitive hyperthermia: In-vitro study
- 2015Size dependent heating efficiency of iron oxide single domain nanoparticlescitations
- 2014Radio frequency absorber of electromagnetic radiation
- 2013A layer radiowave absorber based on double-period lattices of resistive squarescitations
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article
Flexible, ultrathin and light films from one-dimensional nanostructures of polypyrrole and cellulose nanofibers for high performance electromagnetic interference shielding
Abstract
Combining highly conducting one-dimensional nanostructures of polypyrrole with cellulose nanofibers (CNF) into flexible films with tailored electrical conductivity and mechanical properties presents a promising route towards the development of eco-friendly electromagnetic interference shielding devices. Herein, conducting films with a thickness of 140 μm were synthesized from polypyrrole nanotubes (PPy-NT) and CNF using two approaches, i.e., a new one-pot synthesis consisting of in situ polymerization of pyrrole in the presence of structure guiding agent and CNF, and a two-step synthesis, in which CNF and PPy-NT were physically blended. Films based on one-pot synthesis (PPy-NT/CNFin) exhibited higher conductivity than those processed by physical blending, which was further enhanced up to 14.51 S cm−1 after redoping using HCl post-treatment. PPy-NT/CNFin containing the lowest PPy-NT loading (40 wt%), thus the lowest conductivity (5.1 S cm−1), displayed the highest shielding effectiveness of −23.6 dB (>90 % attenuation), thanks to the good balance between its mechanical properties and electrical conductivity. © 2023 Elsevier Ltd