Effect of the degree of graphization on the bromination of carbon fibers

The objective of this paper is to investigate how the degree of graphitization affects the bromination of carbon fibers in terms of the charge transfer, in-plane ordering and physical damage, which are three phenomena that largely determine the structure and/or properties of brominated carbon fibers. It was thus found that there is a different minimum degree of graphitization for each of these three phenomena. In the bromination of carbon fibers by the vapor method, (i) the minimum degree of graphitization for weight uptake or charge transfer corresponds to that between the P-55 and P-75 fibers, (ii) the minimum degree of graphitization for physical damage corresponds to that between the P-100 and P-120 fibers, and (iii) the minimum degree of graphitization for in-plane ordering at room temperature corresponds to that between the P-120 and E-130 fibers.