Fabrication and electrical characterization of electrospun polyacrylonitrile‐derived carbon nanofibers

Abstract

Carbon nanofibers were produced from a polyacrylonitrile/N,N-dimethylformamide precursor solution by an electrospinning process and later pyrolysis at temperatures ranging from 500 to 11008C in an N 2 atmosphere for about 1 h. The morphological structure of the nanofibers was studied with scanning electron microscopy. Scanning electron microscopy images of carbonized polyacrylonitrile nanofibers without a gold coating showed that the carbonized polyacrylonitrile nanofibers possessed electrical properties. The thermal behavior of the nanofibers was studied with thermogravimetric analysis. An indirect four-point-probe method was used for the measurement of the conductivity of nanofiber mats. The conductivity increased sharply with the pyrolysis temperature.

Functionalization of PAN-Based Electrospun Carbon Nanofibers by Acid Oxidation: Study of Structural,Electrical and Mechanical Properties

“…However, the CVD method is complicated and costly procedure and is unable to produce the long fibers (9). Alternatively, carbon nanofibers (CNFs) can also be produced by pyrolyzing electrospun nanofibers from polymeric precursors mainly PAN (9,3,10). The PAN precursor nanofibers are converted to carbon counterparts by thermal treatments, including stabilization and carbonization (3).…”

Electrospinning of polyacrylonitrile (PAN) solution: Effect of conductive additive and filler on the process

“…Polyacrylonitrile (PAN), whose behaviour in electrospinning is well known [30,[38][39][40][41], was used in the experiments. Electrospun PAN fibres have many possible applications, one of which is the production of carbon nanofibres (CNF) by carbonization of electrospun precursor fibres [17,21,25,26,29,[40][41][42][43][44][45]. CNTs can be used in precursor fibres since CNT filler may effectively resist heat shrinkage in composite fibres during the carbonization process [29].…”

Uniaxially Aligned Poly(p-phenylene vinylene) and Carbon Nanofiber Yarns through Electrospinning of a Precursor

“…5). Agend et al (2007) fabricated carbon nanofibers by electrospinning of PAN from DMF solution and subsequent carbonization and found that average diameter of PAN nanofibers decreased from 149 to 109 nm by carbonization at 1100 °C. It should be emphasized in Fig.…”