Journal
SMART MATERIALS AND STRUCTURES
Volume 21, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0964-1726/21/10/105028
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Funding
- Natural Science and Engineering Research Council (NSERC) of Canada
- Fonds Quebecois de la Recherche sur la Nature et les Technologies (FQRNT)
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We report on the fabrication of self-healing nanocomposite materials, consisting of single-walled carbon nanotube (SWCNT) reinforced 5-ethylidene-2-norbornene (5E2N) healing agent-reacted with ruthenium Grubbs catalyst-by means of ultrasonication, followed by a three-roll mixing mill process. The kinetics of the 5E2N ring opening metathesis polymerization (ROMP) was studied as a function of the reaction temperature and the SWCNT loads. Our results demonstrated that the ROMP reaction was still effective in a large temperature domain (-15-45 degrees C), occurring at very short time scales (less than 1 min at 40 degrees C). On the other hand, the micro-indentation analysis performed on the SWCNT/5E2N nanocomposite material after its ROMP polymerization showed a clear increase in both the hardness and the Young modulus-up to nine times higher than that of the virgin polymer-when SWCNT loads range only from 0.1 to 2 wt%. The approach demonstrated here opens new prospects for using carbon nanotube and healing agent nanocomposite materials for self-repair functionality, especially in a space environment.
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