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Study on Surface Properties of PAN-Based Carbon Fiber Oxidized in a Static Electrochemical Oxidation Process

PAN-based carbon fibers (CFs) were oxidized in a static electrochemical oxidation process. The surface color and chemical composition were investigated by means of digital camera and XPS. The results showed that, with the increasing distance from anodic roller, the surface color of CFs changed and the degree of oxidation got weaker and weaker. A close correlation was found between its surface color and chemical properties. It indicates that the electrochemical oxidation performance of one kind of carbon fiber can be handily studied using static electrochemical oxidation process because we can get CFs of different degree of oxidation through one experiment.