Mesophase carbon fiber shape

Figure 2. Mesophase carbon fiber with radial structure and open-wedge shape. Polarized light.

Figure 3. Mesophase carbon fiber with random-core structure and round shape.

Figure 4.33 Extrusion of pitch fibers through a capillary (a) Without a stirrer (b) With a stirrer. The microstructure of the fiber is very sensitive to whether a stirrer is used and to the shape (X, Y, Z) of the stirrer. Source Reprinted with permission from Hamada T, Nishida T, Sajiki Y, Matsumoto M, Endo M, Structures and physical properties of carbon fibers from coal tar mesophase pitch, J Mater Res, 2, 850, 1987, Copyright 1987, Materials Research Society. Reprinted with permission from Hamada T, Nishida S, Sajiki Y, Furayama M, Tomioka T, Extended Abstracts of the J8 Biennial Conference on Carbon, Worcester, MA (American Carbon Society, University Park, PA), 225, 1987. Copyright 1987, The American Carbon Society.

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