Biomimetic Biomass-Bsed Carbon Fibers: Effect of Covalent-Bnd Connection on Performance of Derived Carbon Fibers

• DOI: 10.1021/acssuschemeng.9b02831
• Publication Date: 2019-08-30T18:52:51Z
• Authors: Zhong Dai; Qiping Cao; Huan Liu; Xiaojuan Shi; Xing Wang; Haiming Li; Ying Han; Yao Li; Jinghui Zhou
• Keywords: Carbon fibers; Thermal Stability

The morphological collapse of pure biomass-based carbon fibers is the main challenge restricting its development. Inspiration comes from nature that cellulose and lignin in natural trees are linked by covalent-bonds, leading to good extensibility stability wood. In this work, an effective strategy presented connect cellulose-acetate covalent-bond obtain a novel fiber precursor material. Isophorone diisocyanate was used as chemical modifier successfully through covalent-bond, which formed urethane reaction isocyanate group hydroxyl group. With introduction connection, exhibit large molecular weight, uniform weight distribution, excellent thermal stability, spinnability. After thermo-stabilization carbonization, prepared. results SEM, BET, tensile test, electrochemical properties test indicate connection effectively maintains morphology fiber, plays key role for increasing strength energy storage capacity fibers. pure-biomass-based show promise production high-quality, green, cost reduced