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Microstructures and mechanical properties of aligned electrospun carbon nanofibers from binary composites of polyacrylonitrile and polyamic acid.
- Source :
-
Journal of Materials Science . Nov2018, Vol. 53 Issue 21, p15096-15106. 11p. 2 Black and White Photographs, 1 Diagram, 5 Graphs. - Publication Year :
- 2018
-
Abstract
- 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 °C possessed the highest tensile strength of 1212 MPa, which could be attributed to the ordered graphitic structures in ECNFs. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CARBON fibers
*INORGANIC fibers
*ELECTROSPINNING
*NANOFIBERS
*TENSILE strength
Subjects
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 53
- Issue :
- 21
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 131217998
- Full Text :
- https://doi.org/10.1007/s10853-018-2700-y