✦ LIBER ✦
The key role of microtexture in the graphitisation of PBO fibre chars as seen by X-ray scattering and transmission electron microscopy
✍ Scribed by M.B. Vázquez-Santos; A. Martínez-Alonso; J.M.D. Tascón; J.-N. Rouzaud; E. Geissler; K. László
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 659 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0008-6223
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✦ Synopsis
Poly(p-phenylene benzobisoxazole) (PBO) fibres, heat-treated between 900 and 2700 °C, were studied by both small-and wide-angle X-ray scattering, and by HRTEM. As directly imaged by HRTEM, the material treated at 900 °C consists of nanometre-sized graphitic domains with a microtexture that resembles non-graphitisable carbon. However, above 2000 °C, these elongated structures coalesce, yielding highly graphitised lamellar carbon.