Magnetic paper from sugarcane bagasse fibers modified with cobalt ferrite nanoparticles

Oscar H. Piñeres, Emma C. Salcedo, Adriana P. Herrera, Jorge H. Sánchez, Germán C. Quintana

    Research output: Contribution to journalArticlepeer-review

    5 Scopus citations

    Abstract

    Magnetic paper sheets were prepared from bleached sugarcane bagasse fibers and cobalt ferrite nanoparticles by lumen loading method. Sugarcane bagasse is an important fibrous raw material widely used worldwide for papermaking, whereas cobalt ferrite nanoparticles is an appropriate material for fibers modification given their magnetic properties. Cobalt ferrite nanoparticles were synthetized by coprecipitation method and coated with silica by hydrolysis and condensation of tetraethyl orthosilicate (TEOS) molecules. Then, silica coated magnetic nanoparticles were functionalized with polyethylenimine (PEI), as retention aid, by electrostatic bonding. It was observed that the loading degree of magnetic fibers depends on nanoparticles concentration and PEI dosage, which was determined by thermogravimetric analysis (TGA). Scanning electron microscope (SEM) shows the deposition of coated nanoparticles on the surface and into macropores of fibers. All samples exhibited ferromagnetic behavior. The coercivity values of magnetic fibers are higher than 0.2 kOe. This indicates that these fibers could be used to produce paper for magnetic recording purposes. Magnetic papers with 10 and 20% of modified fibers were manufactured. Brightness and tensile index of papers were decreased with the rise of loading degree. CIEL*a*b analysis shows the color differences between unmodified and modified papers.

    Original languageEnglish
    Pages (from-to)3903-3918
    Number of pages16
    JournalCellulose
    Volume27
    Issue number7
    DOIs
    StatePublished - 1 May 2020

    Bibliographical note

    Funding Information:
    We would like to acknowledge the financial support of this project from Universidad de Cartagena (Grant No. 009-2015) and Universidad Pontificia Bolivariana. Additionally, we are grateful to Prof. Juan Hinestroza from Cornell University and PhD student David Patiño from Universidad de Cartagena for performing TEM measurements, as well as Prof. Sandra Correa of Universidad Pontificia Bolivariana for SEM images.

    Funding Information:
    We would like to acknowledge the financial support of this project from Universidad de Cartagena (Grant No. 009-2015) and Universidad Pontificia Bolivariana. Additionally, we are grateful to Prof. Juan Hinestroza from Cornell University and PhD student David Pati?o from Universidad de Cartagena for performing TEM measurements, as well as Prof. Sandra Correa of Universidad Pontificia Bolivariana for SEM images.

    Publisher Copyright:
    © 2020, Springer Nature B.V.

    Keywords

    • Bleached sugarcane bagasse fibers
    • Cobalt ferrite nanoparticles
    • Lumen loading
    • Magnetic paper sheets
    • Polyethylenimine

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