2021
DOI: 10.1039/c9fd00109c
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Multifunctional coatings of exfoliated and reassembled graphite on cellulosic substrates

Abstract: Graphite is spontaneously exfoliated within aqueous alkaline cellulose solutions, forming stable dispersions that can be used to coat cellulosic, ceramic and other substrates with continuous macroscopic layers. These are stable...

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Cited by 11 publications
(8 citation statements)
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References 55 publications
(37 reference statements)
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“…Thickness also affects other functional properties of ERG films; the most remarkable case is its impact on the surface electric resistance with a surprising consequence: ERG coatings may show a surface resistance lower than graphene monolayers the resistivity of which is only 10 −8 Ω·m −1 , but the <1 nm thickness leads to a >30 Ω/square [ 14 ].…”
Section: Discussionmentioning
confidence: 99%
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“…Thickness also affects other functional properties of ERG films; the most remarkable case is its impact on the surface electric resistance with a surprising consequence: ERG coatings may show a surface resistance lower than graphene monolayers the resistivity of which is only 10 −8 Ω·m −1 , but the <1 nm thickness leads to a >30 Ω/square [ 14 ].…”
Section: Discussionmentioning
confidence: 99%
“…Dispersions with different proportions of graphite and cellulose were prepared as described in previous works of the authors [ 13 , 14 ]. Cellulose powder was slowly added to a cold (0–5 °C) NaOH solution in a polyethylene beaker under gentle stirring using a Fisatom 713D stirrer at 210 rpm min −1 to avoid cellulose clumping.…”
Section: Methodsmentioning
confidence: 99%
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“…They are flexible and resist long experimental times. They peel off slowly, as expected for a material formed by parallel thin lamellae that also show chemical and morphological stability. , Galvanized steel (120 μm thick) duct was purchased from Barao Calhas (Campinas - SP). Aluminum foil (14 μm thick) was a product from WyDA.…”
Section: Methodsmentioning
confidence: 99%
“…70 O ERG é um revestimento altamente condutor e fortemente aderente a diversos substratos, como papel, madeira, cerâmica, tecidos e não tecidos feitos de polímeros naturais e sintéticos. 71 Quando folhas de papel são revestidas com a dispersão de ERG, um material flexível é obtido, podendo atuar em circuitos elétricos, como retardante de chamas 72 e também como eletrodos para supercapacitores, 73 dispositivos flexoelétricos 74 e células higroelétricas. 47,71,75 Recentemente, um artigo do grupo do professor Burgo da Universidade Federal de Santa Maria, do qual fui co-autora, 47 O gerador higroelétrico descrito neste trabalho apresentou uma tensão de saída de 0,5 V, alimentando um resistor de 2 M com uma corrente elétrica de até 250 nA, por 140 horas.…”
Section: Higroeletricidade E O Uso De Ergunclassified