Park, SH Jo, SM Kim, DY Lee, WS Kim, BC 2024-01-21T05:06:58Z 2024-01-21T05:06:58Z 2021-09-03 2005-05 0379-6779 https://pubs.kist.re.kr/handle/201004/136525 To investigate the effects of introducing the iron compound on the carbonization behavior polyacrylonitile (PAN)-based electrospun nanofibers were carbonized with or without iron(III) acetylacetonate (AAI) over the temperature range of 900-1500 degrees C in nitrogen atmosphere. The morphological characteristics of the carbon nanotibers were investigated using X-ray diffractometer (XRD), Raman spectroscopy, field emission scanning electron microscopy, and transmission electron microscopy. The electrical conductivity of the carbon nanofiber web was measured by four-point probe method. The iron catalyst had a profound effect on the crystal structure of the carbonized nanofiber. In the presence of AAI the nanofibers carbonized at 1300 degrees C developed graphite structure, which could be obtained at the temperature higher than 2000 degrees C in the absence of the catalyst. The in-plane size of the graphite crystals (L-a) was measured to be about 6.5 nm by Raman spectroscopy and the (0 0 2) spacing by XRD was 0.341 nm. (c) 2005 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA Effects of iron catalyst on the formation of crystalline domain during carbonization of electrospun acrylic nanofiber Article 10.1016/j.synthmet.2005.02.010 1 SYNTHETIC METALS, v.150, no.3, pp.265 - 270 SYNTHETIC METALS 150 3 265 270 N scie scopus 000229957500009 2-s2.0-19144367060 Materials Science, Multidisciplinary Physics, Condensed Matter Polymer Science Materials Science Physics Polymer Science Article FILAMENTOUS CARBON GRAPHITE FILM NANOTUBES PYROLYSIS POLYMERS WEB electrospinning polyacrylonitrile catalytic graphitization carbon nanofiber graphite structure iron(III) acetylacetonate