Early stages on the graphitization of electrostatically generated PAN nanofibers

Author

Wang, Yu ; Santiago-Aviles, Jorge J.

Author_Institution

Dept. of Electr. & Syst. Eng., Pennsylvania Univ., Philadelphia, PA, USA

fYear

2002

fDate

2002

Firstpage

29

Lastpage

32

Abstract

Carbon nanofibers were produced from polyacrylonitrile/N, N-Dimethyl Formamide (PAN/DMF) precursor solution using electrospinning and vacuum pyrolysis at temperatures from 773 K to 1273 K for 0.5, 2, and 5 hours, respectively. Their conductance was measured. It was found that the conductivity increases sharply with the pyrolysis temperature, and increases considerably with pyrolysis time at the lower pyrolysis temperatures of 873, 973 and 1073 K, but varies, less obviously, with pyrolysis time at the higher pyrolysis temperatures of 1173 and 1273 K.

Keywords

carbon fibres; electrical conductivity; graphitisation; nanostructured materials; polymer fibres; pyrolysis; 0.5 hour; 2 hr; 5 hour; 773 to 1273 K; C; PAN/DMF; carbon nanofibers; conductance; conductivity; electrospinning; electrostatically generated PAN nanofibers; graphitization; polyacrylonitrile/N,N-dimethyl formamide precursor solution; pyrolysis temperature; pyrolysis time; vacuum pyrolysis; Conductivity measurement; Electrostatic measurements; Gold; Optical fiber sensors; Optical fiber testing; Scanning electron microscopy; Scanning probe microscopy; Substrates; Temperature measurement; Thermal conductivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2002. IEEE-NANO 2002. Proceedings of the 2002 2nd IEEE Conference on

Print_ISBN

0-7803-7538-6

Type

conf

DOI

10.1109/NANO.2002.1032116

Filename

1032116