Fabrication, Characterization, and Magnetic Behavior of Particulate FeO-Polyacrylonitrile Composite Nanofibers
Di Zhang, A. Wang, Z. Guo
Lamar University, US
Keywords: electrospinning, magnetic nanoparticles, polymer nanocomposites, nanofibers
Abstract:In this study, polyacrylonitrile (PAN) composite nanofibers containing different amount of ferrous oxide (FeO) have been obtained via electrospinning. The applied voltage is 10 kV and 15 kV and the actual particle concentration in the nanofibers is between 9% and 25%, respectively. The injection speed of 0.01 ml/min, 0.02 ml/min and 0.03 ml/min were chosen to investigate its effect on the physicochemical properties of the fibers. The surface morphology, thermal stability, crystal structure, and magnetic properties of PAN/FeO nanofibers are characterized using attenuated total reflection Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and physical properties measurement system by Quantum Design, respectively. The results indicated that the magnetic properties of nanofibers can be significantly enhanced by the addition of high loading FeO NPs. To the best of the authors’ knowledge, this is the first time to demonstrate a high particle loading in the composite nanofibers fabrication. Compared with the bulk form, the fabricated one-dimensional nanofibers could serve as highly sensitive sensors arising from the high specific surface area. SEM images of the PAN/FeO composite nanofibers reveal a uniform one-dimension structure with fiber size around 0.1 microm. The effects of operation conditions such as speed, applied voltage, and particle loading on the properties of nanofibers will be discussed.