Influence of Lignin units on the properties of Lignin/PAN-derived carbon fibers
Influence of Lignin units on the properties of Lignin/PAN-derived carbon fibers
复制标题
木质素单元对木质素/PAN基碳纤维性能的影响
DOI：
10.1002/app.49274
复制
发表时间：
2020
影响因子：
3
通讯作者：
Hongbo Liu
中科院分区：
文献类型：
--
作者：
Xiaxiang Zhang;Silin Dong;Wei Wu;Jianxiao Yang;Jun Li;Kui Shi;Hongbo Liu
由于其高碳收率、低成本和可再生来源，木质素被认为是制造碳纤维（CFs）的有吸引力的前体。本文制备了木质素/聚丙烯腈（PAN）衍生的碳纤维，并对其进行了表征，研究了木质素单元对其多孔结构和表面化学性质的影响。结果表明，添加20%木质素的PAN制备的LP20‐CF具有比原始LP0‐CF更高的表面积，并且具有相互连接的多维网络。此外，木质素/PAN衍生的CFs比原始CFs含有更多的C - <s:1> O， COOR氧官能团和N - 6， N - <s:1> Q氮官能团。这些结果表明，木质素可以在不活化的情况下获得结构特殊、孔隙度发达、表面化学成分丰富的碳纤维。因此，利用木质素制造孔洞和改善碳纤维的表面化学性质是制备低成本、高性能功能碳材料的一种简单有效的策略。
Lignin was proposed to an attractive precursor for making carbon fibers (CFs) owing to its high carbon yield, low‐cost, and renewable sourcing. In this work, Lignin/polyacrylonitrile (PAN)‐derived CFs were prepared and characterized to investigate the effects of Lignin units on their porous texture and surface chemistry. The results showed that the LP20‐CF prepared from PAN with 20% Lignin had higher surface areas than that of the pristine LP0‐CF, and it possessed interconnected multidimensional network with fiber bonding. Moreover, Lignin/PAN‐derived CFs contained more oxygen functional groups of CO, COOR, and nitrogen functional groups of N‐6, NQ than the pristine CFs. These results indicated that the Lignin could be beneficial to achieve CFs with special structure, developed porosity and rich surface chemistry without activation. Therefore, the utilization of Lignin to produce pores and improve surface chemistry of CFs was a simple and effective strategy for preparing the low‐cost and high‐performance functional carbon materials.