No.2-21 Preparation of Hollow Carbon Fiber from A Biomass-derived Extract

Abstract

We have recently succeeded in preparing a carbon fiber using an extract produced from a degradative solvent extraction of rice straw, which we call Soluble, as a precursor. We have also found that the carbon fiber produced under certain condition is hollow fiber. In this work, we examined how and when the hollow is formed. It was clarified that the hollow is formed during the spinning process. The hollow formed is retained through the stabilization and carbonization processes. The pretreatment condition of Soluble and spinning speed of melt spinning were found to be main factors affecting the hollow formation.