Influence of Initial Stage Adhesion to Activated Sludge on Surface Modified Carbon Fiber by Photo-oxygenation.

It is known that a carbon fiber has a high biocompatibility. The amount of adhered activated sludge was much large when carbon fiber was bathed into an activated sludge. Activity and wet ability on surface of carbon fiber were increased by photo-oxygenation treated at 100°C, 150°C, and 200°C. After the treatment, functional groups including atoms were introduced to surface of carbon fiber. The amount of adhered activated sludge to treated carbon fiber was measured each at 1 minute. The amount of adhered activated sludge was increased with increasing treated temperature. The surface of carbon fiber was analyzed by X-ray photo-electronic spectroscopy (XPS). The ratio of oxygen/carbon atoms on the surface of treated carbon fiber was larger than that of untreated carbon fiber. Functional groups including oxygen introduced into the carbon fiber surface were influenced to the adhesion of activated sludge on carbon fibers and improved in the wet ability.