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Open AccessArticle

White Magnetic Paper with Zero Remanence Based on Electrospun Cellulose Microfibers Doped with Iron Oxide Nanoparticles

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Department of Mechanical and Manufacturing Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
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National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103, 400293 Cluj-Napoca, Romania
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Laboratory of Magnetic Fluids, Center for Fundamental and Advanced Technical Research, Romanian Academy—Timisoara Branch, M. Viteazul Ave. #24, 300223 Timisoara, Romania
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Research Center for Complex Fluids Systems Engineering, Politehnica University of Timisoara, M. Viteazu Ave. #1, 300222 Timisoara, Romania
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(3), 517; https://doi.org/10.3390/nano10030517
Received: 30 January 2020 / Revised: 28 February 2020 / Accepted: 9 March 2020 / Published: 12 March 2020
(This article belongs to the Special Issue Application of Nanocellulose in the Industry)
The preparation procedure of zero magnetic remanence superparamagnetic white paper by means of three-layer membrane configuration (sandwiched structure) is presented. The cellulose acetate fibrous membranes were prepared by electrospinning. The middle membrane layer was magnetically loaded by impregnation with an aqueous ferrofluid of 8 nm magnetic iron oxide nanoparticles colloidally stabilized with a double layer of oleic acid. The nanoparticles show zero magnetic remanence due to their very small diameters and their soft magnetic properties. Changing the ferrofluid magnetic nanoparticle volume fraction, white papers with zero magnetic remanence and tunable saturation magnetization in the range of 0.5–3.5 emu/g were prepared. The dark coloring of the paper owing to the presence of the black magnetite nanoparticles was concealed by the external layers of pristine white cellulose acetate electrospun fibrous membranes. View Full-Text
Keywords: magnetic paper; magnetic white paper; superparamagnetic paper; microfiber; cellulose; electrospinning; iron oxide magnetic nanoparticles magnetic paper; magnetic white paper; superparamagnetic paper; microfiber; cellulose; electrospinning; iron oxide magnetic nanoparticles
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Papaparaskeva, G.; Dinev, M.M.; Krasia-Christoforou, T.; Turcu, R.; Porav, S.A.; Balanean, F.; Socoliuc, V. White Magnetic Paper with Zero Remanence Based on Electrospun Cellulose Microfibers Doped with Iron Oxide Nanoparticles. Nanomaterials 2020, 10, 517.

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