425259 Electrospun Polyacrylonitrile / Iron(III) Nitrate Nanocomposite Fibers for the Removal of Chromium in Water

Wednesday, November 11, 2015: 1:33 PM
251E (Salt Palace Convention Center)
Yang Lu1, John Zhanhu Guo2 and Evan K. Wujcik1, (1)Materials Engineering And Nanosensor (MEAN) Laboratory, Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX, (2)Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, TN

Uniform electrospun PAN/Fe(NO3)3 nanofibers with small diameters were successfully prepared by systematically optimizing the electrospinning parameters including polymer concentration, salt loading, applied voltage, tip-to-collector distance, and flow rate. These parameters are shown to affect the fiber morphology and the addition of iron (III) nitrate salt was found to be able to reduce the fiber size. Due to the conductive nature of iron salt in polymer solution, even a relative lower voltage of 6 kV could generate a stable fluid jet and yield the nanofibers. The thermal properties of the composite fibers were investigated by thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). Rheological studies were also conducted. The composite nanofibers were further carbonized to carbon nanofibers. Applications of the nanofibers in environment remediation have shown promise.

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See more of this Session: Composites for Environmental Applications
See more of this Group/Topical: Materials Engineering and Sciences Division