期刊
JOURNAL OF MATERIALS SCIENCE
卷 53, 期 21, 页码 15096-15106出版社
SPRINGER
DOI: 10.1007/s10853-018-2700-y
关键词
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资金
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- National Natural Science Foundation of China [21574060, 21374044]
- Major Special Projects of Jiangxi Provincial Department of Science and Technology [20114ABF05100]
- Technology Plan Landing Project of Jiangxi Provincial Department of Education [GCJ2011-24]
High mechanical performance carbon nanofibers are highly required for the carbon nanofiber-reinforced composites, and it is necessary to develop novel precursors for the preparation of carbon nanofibers. In this work, blends of poly(acrylonitrile-butyl acrylate mono-butyl itaconate) (co-PAN) and polyamic acid (PAA) were electrospun into aligned nanofibers and the nanofibers were converted to carbon nanofibers by thermal imidization, pre-oxidation and high-temperature carbonization. FT-IR spectroscopy was applied to monitor the chemical structures of the nanofibers before and after pre-oxidation. Tensile tests were used to characterize the mechanical properties of electrospun carbon nanofibers (ECNFs). The microstructures of ECNFs were investigated by high-resolution TEM and Raman spectroscopy. The results indicated that the ECNFs derived from blend of co-PAN/PAA with molar ratio of 6/4 and with carbonization temperature of 1400 A degrees C possessed the highest tensile strength of 1212 MPa, which could be attributed to the ordered graphitic structures in ECNFs.
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