Modification of polyacrylonitrile (PAN) carbon fiber precursor via post-spinning plasticization and stretching in dimethyl formamide (DMF)

Chen, J.C; Harrison, I. R.

doi:10.1016/s0008-6223(01)00050-1

Cited by 203 publications

(115 citation statements)

References 30 publications

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“…Conventional carbon fibers, which are prepared by the carbonization of polymer precursors such as polyacrylonitrile (PAN) fibers at high temperature, can be obtained inexpensively; however, these carbon fibers typically have diameters ranging from 1 to 100 mm and poor mechanical strength (rigid but brittle). 6,7 As an alternative to microfibers, nanofibers prepared by applying an electrically charged jet to a polymer solution/melt (electrospinning) have recently received much attention. The rapidly developing technique of electrospinning provides a cost-effective approach to preparing fibers with nanometer-scale diameters for application in electronic components and devices.…”

Section: Introductionmentioning

confidence: 99%

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Carbon nanofibers prepared from electrospun polyimide, polysulfone and polyacrylonitrile nanofibers by ion-beam irradiation

Sode

Sato

Tanaka

et al. 2013

Polym J

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Novel electrical conductive carbon nanofibers were prepared by a combination of electrospinning and ion-beam irradiation techniques. Four types of polymer nanofibers, including polyimides (2,2 0 -bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA)-2,2 0 -bis(4-aminophenyl) hexafluoropropane (6FAP) and 6FDA-Bis(4-(4-aminophenoxy)phenyl) sulfone (APPS)), polysulfone (PSF) and polyacrylonitrile, were prepared by the electrospinning method, which yielded fine nanofibers with diameters of B150 nm (except PSF) under optimized conditions. The obtained polymer nanofibrous membranes were irradiated with Kr þ using an ion implanter at various ion fluences to give carbonized nanofibers. The electrical conductivities of the carbon nanofibers increased with an increase in the ion fluence; the conductivity of the electrospun 6FDA-6FAP nanofibrous membrane reached up to ca. 10 À1 S cm À1 with 10 16 ion cm À2 of Kr þ . The influence of the starting polymers on the electrical conductivity of the carbon nanofibers was studied by Raman and X-ray photoelectron spectroscopy analyses.

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Section: Introductionmentioning

confidence: 99%

“…17 PAN was chosen because there have been many reports on carbon fibers prepared from PAN fibers by thermal carbonization. 6,7,24 Here, we discuss the morphology and conductivity differences among these electrospun polymer nanofibers formed via ion-beam irradiation at various ion fluences.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanofibers prepared from electrospun polyimide, polysulfone and polyacrylonitrile nanofibers by ion-beam irradiation

Sode

Sato

Tanaka

et al. 2013

Polym J

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“…Conventional carbon fibers are commercially prepared from precursors, such as polyacrylonitrile, and are carbonized at high temperatures; however, these carbon fibers typically have their diameters ranging from 1 to 100 m and poor formability for use in electronic devices [2,3]. As against microfibers, nanofibers prepared through an electrically charged jet of a polymer solution/melt (electrospinning) have received a lot of attentions [4].…”

Section: Introductionmentioning

confidence: 99%

Ion-beam Irradiation on Electrospun Ladder-type Polyimide Nanofibers

Sato

Tanaka

Suzuki

et al. 2013

J. Photopol. Sci. Technol.

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The ladder-type polyimide, polypyrrolone (PPL), nanofibers were prepared by an electrospinning of precursor polymer and followed thermal ring-closing reaction. Ion-beam irradiation on the electrospun PPL nanofibers gave carbon nanofibers. The electrical conductivities of PPL nanofibrous membranes after ion-beam irradiation were lower than those of conventional polyimide (6FDA-6FAP) nanofibrous membranes due to their thick fiber diameters and shallow ion penetration. However, results of dense membranes and Raman spectra revealed that the ladder structure of PPL had advantages in carbonization and graphitization to give higher electrical conductive materials.

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“…This kind of solvent mixture was widely applied as the coagulant bath in PAN spinning. Also the mixture can be used as plasticizer for the post spinning drawing owing to water's effect on the decrease of dipole interactions inside the PAN fiber [3]. The solvent mixture can be considered as a not-so-good solvent suitable to make PAN gel with the proper control of the nonsolvent amount.…”

Section: Introductionmentioning

confidence: 99%

Investigation of gel-spun PAN fiber morphology by membrane technology techniques

Qin

Pan

2010

E-Polymers

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Abstract:The as-formed structure of gel-spun polyacrylonitrile (PAN) fiber from the solvent mixture system has been probed exploiting AFM techniques developed in the membrane industry. The surface structure of PAN membranes, prepared by phase transition under different casting conditions, was investigated by tapping mode atomic force microscopy. The results obtained show that the size and the density of these aggregates are dependent on the casting solution, namely on the type and concentration of the non-solvent. In the present work, tapping mode atomic force microscopy is used to comply with the main objective of differentiating surface morphologies of membranes.

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Modification of polyacrylonitrile (PAN) carbon fiber precursor via post-spinning plasticization and stretching in dimethyl formamide (DMF)

Cited by 203 publications

References 30 publications

Carbon nanofibers prepared from electrospun polyimide, polysulfone and polyacrylonitrile nanofibers by ion-beam irradiation

Carbon nanofibers prepared from electrospun polyimide, polysulfone and polyacrylonitrile nanofibers by ion-beam irradiation

Ion-beam Irradiation on Electrospun Ladder-type Polyimide Nanofibers

Investigation of gel-spun PAN fiber morphology by membrane technology techniques

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