Innovation in Methods for Incorporating Magnetite into Biocellulose for Electromagnetic Interference Shielding Effectiveness Applications
Thaís Cavalcante de Souza,
Alexsandro Ramos dos Santos,
João Luiz da Silva Pereira Chacon,
Ítalo José Batista Durval,
Andréa Fernanda de Santana Costa,
Eduardo Padrón Hernández,
Attilio Converti,
Glória Maria Vinhas,
Leonie Asfora Sarubbo
Affiliations
Thaís Cavalcante de Souza
Center for Exact and Natural Sciences, Department of Materials Science, Federal University of Pernambuco (UFPE), Rua Prof. Moraes Rêgo 1235, Cidade Universitária, Recife 50670-901, Brazil
Alexsandro Ramos dos Santos
Department of Physics, Federal University of Pernambuco (UFPE), Av. Jorn. Aníbal Fernandes s/n, Cidade Universitária, Recife 50740-540, Brazil
João Luiz da Silva Pereira Chacon
Department of Chemical Engineering, Federal University of Pernambuco (UFPE), Av. dos Economistas, Cidade Universitária, Recife 50740-590, Brazil
Ítalo José Batista Durval
Advanced Institute of Technology and Innovation (IATI), Rua Potyra 31, Prado, Recife 50751-310, Brazil
Andréa Fernanda de Santana Costa
Advanced Institute of Technology and Innovation (IATI), Rua Potyra 31, Prado, Recife 50751-310, Brazil
Eduardo Padrón Hernández
Center for Exact and Natural Sciences, Department of Materials Science, Federal University of Pernambuco (UFPE), Rua Prof. Moraes Rêgo 1235, Cidade Universitária, Recife 50670-901, Brazil
Attilio Converti
Department of Civil, Chemical and Environmental Engineering, Pole of Chemical Engineering, Genoa University (UNIGE), Via Opera Pia 15, 16145 Genoa, Italy
Glória Maria Vinhas
Center for Exact and Natural Sciences, Department of Materials Science, Federal University of Pernambuco (UFPE), Rua Prof. Moraes Rêgo 1235, Cidade Universitária, Recife 50670-901, Brazil
Leonie Asfora Sarubbo
Advanced Institute of Technology and Innovation (IATI), Rua Potyra 31, Prado, Recife 50751-310, Brazil
Materials with magnetic properties are essential in various electric sector technologies. However, the generation of pollutants is of concern, increasing the interest in developing new sustainable, low-cost magnetic materials. These materials have notable applications in protecting against electromagnetic interference (EMI), which can lead to health problems as well as environmental pollution. Therefore, the aims of the present study were to produce a sustainable magnetic polymer using different methods of magnetite incorporation, investigate its magnetic properties, and determine its EMI shielding potential. The magnetic BC materials were obtained via in situ and ex situ magnetic incorporation in processed BC membranes and BC hydrogels. Analyses were carried out using XRD, FTIR, SEM, and VSM, and tests were performed to assess electromagnetic interference shielding effectiveness (EMI SE). The results revealed that the magnetite incorporation method influences the final size of nanoparticles, the arrangement among BC fibers, and the magnetic properties. Materials produced from processed BC had a higher percentage of incorporated magnetite and greater magnetic saturation, whereas those containing nanoparticles with a larger diameter had a stronger coercive field. Although samples did not have high EMI SE, magnetite increased the wave reflection and absorption of the material. This biomaterial can drive important innovations in the energy sector, particularly in efficient and ecological electrical infrastructure.
