Electromagnetic properties of hollow PAN/Fe₃O₄ composite nanofibres via coaxial electrospinning
by Xin Wang; Tingting He; Dawei Li; Fenglin Huang; Qufu Wei; Xiaoling Wang
International Journal of Materials and Product Technology (IJMPT), Vol. 46, No. 2/3, 2013

Abstract: Fe₃O₄ nanoparticles were prepared by the chemical coprecipitation by using Triton X-100 as dispersant. Hollow polyacrylonitrile (PAN)/Fe₃O₄ magnetic composite nanofibres were fabricated through coaxial electrospinning and post-treatment. The effect of sheath feed rate on the formation of hollow structure was investigated and hollow structures of composite nanofibres were characterised by using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Fe₃O₄ nanoparticles existed in composite nanofibres was proved by X-ray diffraction (XRD). The magnetic properties and microwave absorbing properties of hollow composite nanofibres were respectively characterised through superconducting quantum interference device (SQUID) and vector network analyser. The study revealed that the magnetic properties of hollow composite nanofibres were closely related to the contents of Fe₃O₄ nanoparticles. The microwave absorbing properties of hollow PAN/Fe₃O₄ composite nanofibres were better than those of solid PAN/Fe₃O₄ composite nanofibres.

Online publication date: Sat, 21-Jun-2014

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