Superparamagnetic cellulose fiber networks via nanocomposite functionalization

Despina Fragouli; Ilker S. Bayer; Riccardo Di Corato; Rosaria Brescia; Giovanni Bertoni; Claudia Innocenti; Dante Gatteschi; Teresa Pellegrino; Roberto Cingolani; Athanassia Athanassiou

doi:10.1039/C1JM14755B

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Journal of Materials Chemistry

Issue 4, 2012

Journal of Materials Chemistry was published between 1991 and 2012. From issue 1, 2013, it was replaced by three new journals: Journal of Materials Chemistry A, B and C

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Superparamagnetic cellulose fiber networks via nanocomposite functionalization

Despina Fragouli,*^a Ilker S. Bayer,^a Riccardo Di Corato,^b Rosaria Brescia,^b Giovanni Bertoni,^b^c Claudia Innocenti,^d Dante Gatteschi,^d Teresa Pellegrino,^b Roberto Cingolani^b and Athanassia Athanassiou^a^b

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Center for Biomolecular Nanotechnologies @UNILE, Istituto Italiano di Tecnologia, via Barsanti, Arnesano, Italy
E-mail: despina.fragouli@iit.it ;
Tel: +39 0832 295719

Istituto Italiano di Tecnologia (IIT), via Morego 30, Genova, Italy

IMEM-CNR, Parco Area delle Scienze 37/A, Parma, Italy

INSTM-RU of Florence and Department of Chemistry, University of Florence, via della Lastruccia 3-13, Sesto F.no, Firenze, Italy

J. Mater. Chem., 2012,22, 1662-1666

DOI: 10.1039/C1JM14755B
Received 23 Sep 2011, Accepted 04 Nov 2011
First published online 30 Nov 2011

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We present a simple and cost-effective method for rendering networks of cellulose fibers, such as paper, fabrics or membranes, superparamagnetic by impregnating the individual fibers with a reactive acrylic monomer. The cellulose fibers are wetted by a cyanoacrylate monomer solution containing superparamagnetic manganese ferrite colloidal nanoparticles. Upon moisture initiated polymerization of the monomer on the fiber surfaces, a thin nanocomposite shell forms around each fiber. The nanocomposite coating renders the cellulose fibers water repellent and magnetically responsive. Magnetic and microscopy studies prove that the amount of the entrapped nanoparticles in the nanocomposite shell is fully controllable, and that the magnetic response is directly proportional to this amount. A broad range of applications can be envisioned for waterproof magnetic cellulose materials (such as magnetic paper/tissues) obtained by such a simple yet highly efficient method.

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