Rheological behavior of magnetic pulp fiber suspensions

Jorge H. Sánchez, Xiomara Pineda, Germán C. Quintana, Adriana P. Herrera

    Research output: Contribution to specialist publicationArticle


    This paper is focused on the rheology of magnetic pulp suspensions in absence and presence of an external magnetic field. Magnetic fibers were prepared by the lumen loading method using bleached eucalyptus fibers and cobalt ferrite (CoFe2O4) nanoparticles. The effect of mass consistency, temperature, concentration of magnetic fibers, and magnetic field strength on yield stress and apparent viscosity of the suspensions were investigated. In the absence of an applied field, a dependence of yield stress with consistency, as well as with the percentage of magnetic fibers present in the suspension, was found. In flow tests, all the suspensions exhibited shear-thinning behavior, showing that the viscosity is only affected by the consistency of the suspension. On the other hand, magnetorheological measurements show a negative effect of the applied magnetic field on the viscosity of the suspension.

    Original languageEnglish
    Number of pages11
    Specialist publicationTappi Journal
    StatePublished - Jun 2021

    Bibliographical note

    Publisher Copyright:
    © TAPPI Press 2021.

    Types Minciencias

    • Artículos de investigación con calidad Q3


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