Location: Bioproducts ResearchTitle: Bio-based thin films of cellulose nanofibrils and magnetite for potential application in green electronics
|ARANTES, ANA CAROLINA - Federal University Of Lavras|
|SILVA, LUIZ - Federal University Of Lavras|
|Wood, Delilah - De|
|ALMEIDA, CRISLAINE - Federal University Of Lavras|
|TONOLI, GUSTAVO - Federal University Of Lavras|
|OLIVEIRA, JULIANO - Federal University Of Lavras|
|SILVA, JOAQUIM - Federal University Of Lavras|
|Orts, William - Bill|
|BIANCHIA, MARIA LUCIA - Federal University Of Lavras|
Submitted to: Carbohydrate Polymers
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 11/25/2018
Publication Date: 11/26/2018
Citation: Arantes, A.C., Silva, L.E., Wood, D.F., Almeida, C.D., Tonoli, G.H., Oliveira, J.E., Silva, J.P., Williams, T.G., Orts, W.J., Bianchia, M. 2018. Bio-based thin films of cellulose nanofibrils and magnetite for potential application in green electronics. Carbohydrate Polymers. 207:100-107. https://doi.org/10.1016/j.carbpol.2018.11.081.
Interpretive Summary: The electronics industry has grown exponentially over the past 50 years due to the advancement of telecommunications and information technology. Thus, electronic waste (e-waste) has a huge environmental impact. E-waste contains large amounts of nonbiodegradable, toxic materials that are pollution problems. Alternative, “green” methods of electronic production is a solution that will reduce the environmental impact in the production and disposal of electronics. The “green electronics” would be developed using renewable and non-toxic materials such as bio-based hybrids to produce batteries and electric charge storage devices (capacitors). Bio-based thin films were prepared using varying combinations of cellulose nanofibrils, chitosan, magnetite, and glycerol and were evaluated for physico-chemical and dielectric properties. The bio-based thin films have potential to be used as insulators in capacitors in green electronics thereby reducing toxic and nonrenewable e-waste generation.
Technical Abstract: 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 (er) 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 er 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.