Abstract
Silver acetate dissolved in quinoline was mixed thoroughly with the spinnable isotropic petroleum pitch dissolved in the same solvent. After removing the quinoline, the resulting pitch was spun, stabilized, carbonized, and finally activated at 900°C under a stream of steam. The fiber with 33 wt% yield after activation contained 0.63 wt% of fine silver particles and showed N 2-BET specific surface area of 740 m 2/g. It showed antibacterial activity against Staphylococcus aureus and Escherichia coli, before and after soaking in flowing tap water for 20 days. How to improve spinnability of the pitch containing silver acetate and how to increase the specific surface area effectively by the activation process are problems remaining to be solved.
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