Due to its unique structure, hollow-mesoporous carbon fibers would enlarge the applications of hollow fiber in the areas operating in the harsh environment. In this paper, polyacrylonitrile (PAN) -based hollow-mesoporous carbon fibers (HMCFs) with various carbonization temperatures were firstly fabricated by heat treatments including stabilization and carbonization with the hollow-mesoporous precursor fibers preparing with blending alkali lignin (AL). Unlike previously, a small amount of residue of AL (less than 1%) in the hollow-mesoporous fiber (HMF) would reduce the degree of cyclization although the activation energy of cyclization reaction reduces, and thus accelerate the thermal decomposition of HMF which shows a lower carbon yield eventually compared with PAN. The oxidative stability of fibers improves a lot when HMF is transformed into HMCF which is beneficial to use it in the poor conditions. This work explains the effects of residue of AL existing in the precursor fiber on the processes of stabilization and carbonization of HPCMs, and the relationships between basic properties of HMCFs including physical structure, chemical composition and relevant properties and carbonization temperature. It provides a new insight to fabricate HMF into HMCF by the heating treatments of stabilization and carbonization with the existence of AL.

由于其独特的结构，中空碳纤维将扩大中空纤维在恶劣环境中的应用范围。在本文中，首先通过用碱木质素（AL）混合制备的中空前体纤维进行了包括稳定化和碳化在内的热处理，制备了具有不同碳化温度的聚丙烯腈（PAN）基中空碳纤维（HMCFs）。与以前不同，中空中空纤维（HMF）中少量的AL残留物（少于1％）会降低环化程度，尽管环化反应的活化能降低，从而加速了HMF的热分解，这表明与PAN相比，最终的碳收率更低。当HMF转化为HMCF时，纤维的氧化稳定性有了很大提高，这有利于在恶劣的条件下使用。这项工作解释了前体纤维中存在的铝残留物对HPCM的稳定化和碳化过程的影响，以及HMCF的基本特性之间的关系，包括物理结构，化学成分和相关特性以及碳化温度。它通过存在AL的稳定化和碳化热处理为将HMF制成HMCF提供了新的见解。HMCFs的基本特性之间的关系，包括物理结构，化学组成，相关特性和碳化温度。它通过存在AL的稳定化和碳化热处理为将HMF制成HMCF提供了新的见解。HMCFs的基本特性之间的关系，包括物理结构，化学组成，相关特性和碳化温度。它通过存在AL的稳定化和碳化热处理为将HMF制成HMCF提供了新的见解。