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Comparative XRD, Raman, and TEM Study on Graphitization of PBO-Derived Carbon Fibers

Vázquez-Santos, M. Beatriz ; Geissler, Erik ; László, Krisztina ; Rouzaud, Jean-Noël ; Martínez-Alonso, Amelia ; Tascón, Juan M.D

Journal of physical chemistry. C, 2012-01, Vol.116 (1), p.257-268 [Peer Reviewed Journal]

Columbus, OH: American Chemical Society

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Title:
Comparative XRD, Raman, and TEM Study on Graphitization of PBO-Derived Carbon Fibers
Author: Vázquez-Santos, M. Beatriz ; Geissler, Erik ; László, Krisztina ; Rouzaud, Jean-Noël ; Martínez-Alonso, Amelia ; Tascón, Juan M.D
Subjects: C: Nanops and Nanostructures ; Chemical Physics ; Condensed matter: structure, mechanical and thermal properties ; Constant-composition solid-solid phase transformations: polymorphic, massive, and order-disorder ; Cross-disciplinary physics: materials science; rheology ; Equations of state, phase equilibria, and phase transitions ; Exact sciences and technology ; Materials science ; Nanoscale materials and structures: fabrication and characterization ; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations ; Physics ; Quantum dots ; Specific phase transitions ; Structural transitions in nanoscale materials
Is Part Of: Journal of physical chemistry. C, 2012-01, Vol.116 (1), p.257-268
Description: Carbon fibers, obtained by carbonizing poly(p-phenylene benzobisoxazole) (PBO) fibers at 900 °C, graphitize extensively upon heat treatment at higher temperatures (2700 °C). In this work, XRD, Raman spectroscopy, and HRTEM are used to monitor the structural and nanostructural transformations of the carbon material under heat-treatment at several temperatures in the interval 900–2800 °C. These different techniques provide complementary information, especially regarding the spatial resolution they achieve. They highlight a specific nonconventional mode of graphitization for this unexpectedly graphitizable precursor. The reliability in the determination of L a crystallite sizes from these three techniques is compared and discussed. The existence of four steps in the graphitization of PBO-derived carbon fibers is inferred.
Publisher: Columbus, OH: American Chemical Society
Language: English

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Comparative XRD, Raman, and TEM Study on Graphitization of PBO-Derived Carbon Fibers

Vázquez-Santos, M. Beatriz ; Geissler, Erik ; László, Krisztina ; Rouzaud, Jean-Noël ; Martínez-Alonso, Amelia ; Tascón, Juan M.D

Columbus, OH: American Chemical Society

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