Nano Archive

Preparation and surface structures of carbon nanofibers produced from electrospun PAN precursors

GU, Shu-ying and WU, Qi-lin and REN, Jie (2008) Preparation and surface structures of carbon nanofibers produced from electrospun PAN precursors. New Carbon Materials, 23 (2). 171 - 176.

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Official URL: http://www.sciencedirect.com/science/article/B8H10...

Abstract

Carbon nanofibers with diameters in the range of 100 nm to 300 nm were obtained by stabilizing and carbonizing electrospun polyacrylonitrile (PAN) precursors. The morphologies and structures of the nanofibers and PAN precursors were investigated by scanning electron microscopy, scanning tunneling microscopy, and differential scanning calorimetry. The diameters of the PAN precursors and carbon nanofibers showed a log-normal distribution. The cyclization exothermic peak shifted to a lower temperature for electrospun fibers, which suggested that cyclization could be more easily initiated. Pits 10 nm in length and 5 nm in width formed on the surface of the carbon nanofibers, caused by the rough surface of the electrospun precursors and their shrinkage during heat treatment.

Item Type:Article
Uncontrolled Keywords:Carbon nanofibers; Polyacrylonitrile (PAN); Electrospinning; Morphology
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanostructured materials
ID Code:8670
Deposited By:SPI
Deposited On:22 Apr 2010 11:13
Last Modified:22 Apr 2010 11:13

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