沥青质
碳化
材料科学
原材料
碳纤维
化学工程
石油
流变学
纺纱
模数
复合材料
萃取(化学)
木质素
纤维
有机化学
化学
扫描电子显微镜
工程类
复合数
作者
Shabab Saad,Ali Shayesteh Zeraati,Soumyabrata Roy,M. A. S. R. Saadi,Jagoš R. Radović,Ashna Rajeev,Kristen A. Miller,S. P. Bhattacharyya,Stephen R. Larter,Giovanniantonio Natale,Uttandaraman Sundararaj,Pulickel M. Ajayan,Muhammad M. Rahman,Md Golam Kibria
出处
期刊:Carbon
[Elsevier]
日期:2022-04-01
卷期号:190: 92-103
被引量:30
标识
DOI:10.1016/j.carbon.2022.01.011
摘要
Petroleum asphaltenes, a by-product of crude oil extraction, are a promising feedstock for the development of high-value carbonaceous materials because of their high carbon content and aromaticity. In this work, we have studied the efficacy of low-value petroleum asphaltenes as raw materials in producing carbon fibers. We present a facile, yet effective, method to produce carbon fibers without the need of expensive pre-treatment processing. To do this, extensive physicochemical characterizations were carried out to evaluate asphaltene properties throughout the entire process. Continuous spinning of green fibers with different diameters (∼10–200 μm) was optimized according to the rheological characteristics of asphaltenes. We originally developed a multi-step stabilization process to cross-link the asphaltene-derived green fibers. This was followed by carbonization of the fibers resulting in fibers with mechanical strength of ∼400 MPa and Young's modulus of ∼70 GPa. These are relatively high values obtained without any pretreatment or high temperature carbonization/graphitization. This study presents a previously unexplored avenue to develop low-cost carbon fibers from low-value petroleum asphaltenes.
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