期刊
CARBON
卷 48, 期 13, 页码 3968-3970出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2010.06.032
关键词
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资金
- Hungary-Spain Integrated Actions Programme [ESP-3/2006, HH2006-0026]
- CSIC - Hungarian Academy of Sciences
- Spanish CSIC
Poly(p-phenylene benzobisoxazole) (PBO) fibres, heat-treated between 900 and 2700 degrees 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 degrees C consists of nanometre-sized graphitic domains with a microtexture that resembles non-graphitisable carbon. However, above 2000 degrees C, these elongated structures coalesce, yielding highly graphitised lamellar carbon. This graphitisation mode is very different from the conventional progressive graphitisation of lamellar carbon. It is similar to that of polyimide films, and is characterized by a preferential planar orientation of the polyaromatic structural units inherited from the pristine fibre microtexture. (C) 2010 Elsevier Ltd. All rights reserved.
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