1-3-3 Preparation of Carbon Fiber and Activated Carbon Fiber from Clean Low Molecular Weight Fraction obtained from the Degradative Solvent Extraction of Biomass

Abstract

Carbon fiber and activated carbon fiber were produced from a low-molecular-weight extract, which we call Soluble, obtained from the degradative solvent extraction of rice straw. The carbon fibers were first produced by the following steps: adjusting the melting behaviors of Soluble, melt spinning, stabilization and carbonization. The Soluble basis yield of the carbon fiber was around 33%. Then the carbon fibers were activated under a stream of N₂-steam mixture at 850 °C and 900 °C. The BET surface area of activated carbon reached as high as 1882 m²/g at 70 % burn-off at 850 °C.