Comparison of nanotubes produced by fixed bed and aerosol-CVD methods and their electrical percolation behaviour in melt mixed polyamide 6.6 composites
Source abstract
Abstract
The electrical percolation behaviour of five different kinds of carbon nanotubes (CNTs) synthesised by two CVD techniques was investigated on melt mixed composites based on an insulating polyamide 6.6 matrix. The electrical percolation behaviour was found to be strongly dependent on the properties of CNTs which varied with the synthesis conditions. The lowest electrical percolation threshold (0.04 wt.%) was determined for as grown multi-walled carbon nanotubes without any purification or chemical treatment. Such carbon nanotubes were synthesised by the aerosol method using acetonitrile as ferrocene containing solvent and show relatively low oxygen content near the surface, high aspect ratio, and good dispersability. Similar properties could be found for nanotubes produced by the aerosol method using cyclohexane, whereas CNTs produced by the fixed bed method using different iron contents in the catalyst material showed much higher electrical percolation thresholds between 0.35 and 1.02 wt.%. © 2009 Elsevier Ltd. All rights reserved.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Smart Materials for Construction · Polymer Nanocomposites and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
Show source-provided references
1. Mechanical properties of carbon nanotubes10.1007/s003390050999 ↗
2. Nanobeam mechanics: elasticity, strength, and toughness of nanorods and nanotubes10.1126/science.277.5334.1971 ↗
3. Exceptionally high Young’s modulus observed for individual carbon nanotubes10.1038/381678a0 ↗
4. Big returns from small fibers: a review of polymer/carbon nanotube composites10.1002/pc.20058 ↗
5. The present status and key problems of carbon nanotube based polymer composites10.3144/expresspolymlett.2007.39 ↗
6. Influence of small scale melt mixing conditions on electrical resistivity of carbon nanotube–polyamide composites10.1016/j.compscitech.2008.07.007 ↗
7. Fe-catalyzed carbon nanotube formation10.1016/0008-6223(96)00074-7 ↗
8. Large-scale synthesis of single-wall carbon nanotubes by catalytic chemical vapor deposition (CCVD) method10.1016/S0009-2614(99)01338-X ↗
9. Synthesis of single-walled carbon nanotube-Co–MgO composite powders and extraction of the nanotubes10.1039/a908593i ↗
10. Gram-scale CCVD synthesis of double-walled carbon nanotubes10.1039/b301514a ↗
11. Controlled growth of single-walled carbon nanotubes by catalytic decomposition of CH4 over Mo/Co/MgO catalysts10.1016/S0009-2614(01)01183-6 ↗
12. High-yield catalytic synthesis of thin multiwalled carbon nanotubes10.1021/jp046152o ↗
13. Continuous production of aligned carbon nanotubes: a step closer to commercial realization10.1016/S0009-2614(99)00282-1 ↗
14. Pyrolytic production of aligned carbon nanotubes from homogeneously dispersed benzene-based aerosols10.1016/S0009-2614(01)00278-0 ↗
15. Synthesis of thick and crystalline nanotube arrays by spray pyrolysis10.1063/1.1327611 ↗
16. Carbon nanotubes produced by aerosol pyrolysis: growth mechanisms and post-annealing effects10.1016/j.diamond.2003.12.015 ↗
17. Carbon nanotubes by nebulized spray pyrolysis10.1016/j.cplett.2003.11.115 ↗
18. Fe/Co alloys for the catalytic chemical vapor deposition synthesis of single- and double-walled carbon nanotubes (CNTs). 1. The CNT-Fe/Co-MgO system10.1021/jp0524936 ↗
19. Advanced ceramics – combustion synthesis and properties10.1007/BF02757654 ↗
20. Chemical oxidation of multiwalled carbon nanotubes10.1016/j.carbon.2008.02.012 ↗
21. Efficient route to large arrays of CNx nanofibers by pyrolysis of ferrocene/melamine mixtures10.1063/1.125498 ↗
22. Synthesis of highly nitrogen-doped multi-walled carbon nanotubes10.1039/b303793b ↗
23. Structure and nitrogen incorporation of carbon nanotubes synthesized by catalytic pyrolysis of dimethylformamide10.1016/j.carbon.2004.05.047 ↗
24. Stauffer · 1994
25. Measurement and interpretation of nonuniversal critical exponents in disordered conductor–insulator composites10.1103/PhysRevB.52.12477 ↗
26. Correlation of carbon nanotube dispersability in aqueous surfactant solutions and polymers10.1016/j.carbon.2008.10.040 ↗
27. Interfacial in situ polymerization of single wall carbon nanotube/nylon 6,6 nanocomposites10.1016/j.polymer.2006.01.087 ↗
28. Mechanical properties and electrical conductivity of carbon-nanotube filled polyamide-6 and its blends with acrylonitrile/butadiene/styrene10.1016/j.polymer.2003.12.013 ↗
29. Thermal and electrical characterization of multi-walled carbon nanotubes reinforced polyamide 6 nanocomposites
30. Electrical resistivity in semi-crystalline polymers as a function of FIBRIL™ nanotube loadings. (assessed 19.05.09).
31. Preparation of multiwalled carbon nanotube/nylon-6 nanocomposites by in situ polymerization10.1002/app.26942 ↗
32. Influence of different carbon nanotubes on the mechanical properties of epoxy matrix composites – A comparative study10.1016/j.compscitech.2005.04.021 ↗
33. Evaluation and identification of electrical and thermal conduction mechanisms in carbon nanotube/epoxy composites10.1016/j.polymer.2006.01.029 ↗