Preparation of characteristics of carbon nanofibers using phase separation between PAN and PVA
- Preparation of characteristics of carbon nanofibers using phase separation between PAN and PVA
- 김지훈; 이성호; 구본철; 정용식
- 탄소섬유; PAN; PVA; carbon nano fibers; wet-spinning; phase separation
- Issue Date
- VOL 48, NO 4, 226-231
- Polyacrylonitrile-based, submicron, sea-island, carbon fibers were prepared with polyacrylonitrile (PAN)
islands in a polyvinly alcohol (PVA) sea. Mixtures of PAN and PVA were wet-spun and characterized. DSC thermograms
showed phase-separated PVA and PAN, indicating the resultin fibers' sea-island structures. SEM images showed
PAN fibers of 250~400 nm diameter remaining after removal of PVA by immersion in boiling water. The PAN fibers
were stabilized and carbonized, their diameter decreased to 100~200 nm depending on the mixing ratio of PAN to
PVA. XRD showed typical turbostratic structures of the carbon fibers.
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