Bio-based thin films of cellulose nanofibrils and magnetite for potential application in green electronics.

Autor: Arantes ACC; Federal University of Lavras, Department of Chemistry, CP 3037, Lavras, MG, Brazil., Silva LE; Federal University of Lavras, Department of Forest Sciences, CP 3037, Lavras, MG, Brazil., Wood DF; USDA - ARS - WRRC, Albany, CA 94710, USA. Electronic address: de.wood@ars.usda.gov., Almeida CDG; Federal University of Lavras, Department of Chemistry, CP 3037, Lavras, MG, Brazil., Tonoli GHD; Federal University of Lavras, Department of Forest Sciences, CP 3037, Lavras, MG, Brazil., Oliveira JE; Federal University of Lavras, Department of Engineering, CP 3037, Lavras, MG, Brazil., Silva JPD; Federal University of Lavras, Department of Physics, CP 3037, Lavras, MG, Brazil., Williams TG; USDA - ARS - WRRC, Albany, CA 94710, USA., Orts WJ; USDA - ARS - WRRC, Albany, CA 94710, USA., Bianchi ML; Federal University of Lavras, Department of Chemistry, CP 3037, Lavras, MG, Brazil.
Jazyk: angličtina
Zdroj: Carbohydrate polymers [Carbohydr Polym] 2019 Mar 01; Vol. 207, pp. 100-107. Date of Electronic Publication: 2018 Nov 26.
DOI: 10.1016/j.carbpol.2018.11.081
Abstrakt: The objective of this work was to prepare bio-based thin films and evaluate the additions of magnetite and glycerol on the physico-chemical (flexibility, wettability and barrier properties) and dielectric properties of cellulose/chitosan-based films. The films were prepared by solution casting and presented a suitable dispersion of the constituents observed by SEM and FTIR. The films were thermally stable up to 150 °C and had a higher flexibility, wettability and lower barrier properties upon addition of glycerol. The calculated dielectric constant (εr) for the composite films was based on measurements of capacitance, at 100 and 1000 Hz, with the additions of magnetite and glycerol more than doubling the εr increasing the charge storage capacity. The bio-based thin films have potential to be used as insulators in capacitors on the production of green electronics thus, reducing toxic and nonrenewable e-waste generation.
(Copyright © 2018. Published by Elsevier Ltd.)
Databáze: MEDLINE
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