Fine Structure and Texture of PAN based Carbon Fibers

9 FINE STRUCTURE AND TEXTURE OF PAN BASED CARBON FIBERS 

Carbon fibers consist mainly of polyaromatic carbons and effectively exist as structurally disordered (turbostratic) carbon. The crystal structure of a true graphite with a distance of 

Wide angle X-ray diffraction provides the values of the characterization parameters of PAN-based carbon fibers, and are shown in Table 5.9 [67]. 

Fiber type Interlayer spacing c/2 nm Stacking size Lc nm Apparent crystallite length ba nm Apparent crystallite width i-aj. nm Orientation Z deg 

Source Reprinted with permission from Johnson DJ, Handbook of Polymer-Fibre Composites, Jones ER ed., Longman Scientific and Technicai, Hariow, 24-29, 1994. Copyright 1994, Pearson Education Ltd. 

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