Reactive Magnetospinning of Nano- and Microfibers.

Alexander Tokarev, Oleksandr Trotsenko, Darya Asheghali, Ian M Griffiths, Howard A Stone, Sergiy Minko

Index: Angew. Chem. Int. Ed. Engl. 54 , 13613-6, (2015)

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Abstract

Reactive spinning of nano- and microfibers that involves very fast chemical reactions and ion exchange is a challenge for the common methods for nanofiber formation. Herein, we introduce the reactive magnetospinning method. This procedure is based on the magnetic-field-directed collision of ferrofluid droplets with liquid droplets that contain complementary reactants. The collision, start of the chemical reaction, and the fiber drawing are self-synchronized. The method is used to synthesize, cross-link, and chemically modify fiber-forming polymers in the stage of fiber formation. The method provides new opportunities for the fabrication of nanofibers for biomedical applications. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.