Melt processable polyacrylonitrile copolymer precursors for carbon fibers: Rheological, thermal, and mechanical properties

Title
Melt processable polyacrylonitrile copolymer precursors for carbon fibers: Rheological, thermal, and mechanical properties
Authors
구본철유남호박세준최달수진정운이재혁정용식여현욱
Keywords
Carbon fiber; Melt spinning; Polyacrylonitrile; Stabilization; Electron Beam; Mechanical properties
Issue Date
2019-03
Publisher
Journal of industrial and engineering chemistry
Citation
VOL 71-118
Abstract
Polyacrylonitrile (PAN) copolymers containing varying amounts of methyl acrylate (MA), P(AN-co-MA),were synthesized as a melt-spinnable precursor of carbon fibers. The rheological properties of P(AN-co-MA) with MA content of 15 mol% at 190 C proved to be suitable for melt-spinning and the PAN fiber was spun from an extruder. In order to prevent remelting and fusion of the fibers in the stabilization process, electron-beam irradiation of over 1500 kGy was used and the melt-spun PAN fibers were successfully converted to stabilized PAN fibers by thermal treatment up to 250 C. Finally, carbon fibers (CFs) were produced by pyrolysis of the stabilized PAN fibers. The mechanical properties of the resulting-CFs were evaluated; the tensile strength, tensile modulus, and elongation at break were 1.37 0.2 GPa, 110 11.1 GPa, and 1.27  0.28%, respectively. These results suggest the possibility of utilizing meltspinning as a cost-efficient method for fabrication of carbon fibers.
URI
http://pubs.kist.re.kr/handle/201004/68981
ISSN
1226-086X
Appears in Collections:
KIST Publication > Article
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