Graphitic carbon nanofibers developed from bundles of aligned electrospun polyacrylonitrile nanofibers containing phosphoric acid
Graphitic carbon nanofibers developed from bundles of aligned electrospun polyacrylonitrile nanofibers containing phosphoric acid
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由含有磷酸的定向电纺聚丙烯腈纳米纤维束开发而成的石墨碳纳米纤维
DOI：
10.1016/j.polymer.2010.03.044
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发表时间：
2010-05
期刊：
影响因子：
4.6
通讯作者：
中科院分区：
文献类型：
--
作者：
以含有磷酸（PA）的聚丙烯腈（PAN）纳米纤维为前驱体，通过稳定化、碳化和石墨化等热处理，制备了直径约为300 nm的石墨碳纳米纤维（GCNFs）。GCNFs的形态，结构和机械性能进行了系统的表征和/或评价。由含有1.5重量%的静电纺丝PAN前体纳米纤维制成的GCNF的PA表现出的机械强度比由不含PA的前体纳米纤维制成的GCNF的机械强度高62.3%。FT-IR和TGA结果表明，静电纺丝PAN前体纳米纤维中的PA分子在稳定化过程中引发了环化并诱导了芳构化。TEM、XRD和拉曼测试结果表明，稳定化后的PAN纳米纤维具有规则的梯形结构，这有利于石墨碳纤维在碳化和石墨化过程中进一步形成有序的石墨结构。
Graphitic carbon nanofibers (GCNFs) with diameters of approximately 300 nm were developed using bundles of aligned electrospun polyacrylonitrile (PAN) nanofibers containing phosphoric acid (PA) as the innovative precursors through thermal treatments of stabilization, carbonization, and graphitization. The morphological, structural, and mechanical properties of GCNFs were systematically characterized and/or evaluated. The GCNFs made from the electrospun PAN precursor nanofibers containing 1.5 wt.% of PA exhibited mechanical strength that was 62.3% higher than that of the GCNFs made from the precursor nanofibers without PA. The molecules of PA in the electrospun PAN precursor nanofibers initiated the cyclization and induced the aromatization during stabilization, as indicated by the FT-IR and TGA results. The stabilized PAN nanofibers possessed regularly oriented ladder structures, which facilitated the further formation of ordered graphitic structures in GCNFs during carbonization and graphitization, as indicated by the TEM, XRD, and Raman results.
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影响因子：
7.5
作者：
F. Suárez-García;A. Martínez-Alonso;J. Tascón
通讯作者：
F. Suárez-García;A. Martínez-Alonso;J. Tascón
影响因子：
--
作者：
A. Greiner;J. Wendorff
通讯作者：
A. Greiner;J. Wendorff
影响因子：
--
作者：
I. Chun;D. Reneker;H. Fong;X. Fang;J. Deitzel;N. B. Tan;K. Kearns
通讯作者：
I. Chun;D. Reneker;H. Fong;X. Fang;J. Deitzel;N. B. Tan;K. Kearns
影响因子：
10.9
作者：
C. Toles;S. M. Rimmer;J. Hower
通讯作者：
C. Toles;S. M. Rimmer;J. Hower
影响因子：
4.6
作者：
Fong, H;Chun, I;Reneker, DH
通讯作者：
Reneker, DH