期刊
CARBON
卷 50, 期 3, 页码 968-976出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2011.09.060
关键词
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资金
- Shanghai Postdoctoral Science Foundation [11R21420900]
- Natural Science Foundation of Shanghai [11ZR1432100]
- China Scholarship Council
- National Science Foundation [CHE-0809376]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [0809376] Funding Source: National Science Foundation
Nanostructured carbon materials continue to attract much interest for use in devices and as fillers in composites. Here, classical molecular dynamics simulations are carried out using many-body empirical potentials to contrast the mechanical properties of straight and coiled carbon nanotubes. The specific properties of a coiled carbon nanotube (CCNT) are investigated under compression, tension, re-compression, re-tension and pullout from a polyethylene (PE) matrix. The stress-strain curves, spring constants, and yielding strains under compression and tension are given for each system, and the corresponding reasons for the differences in their behavior are discussed. They indicate that the interaction between a CCNT and a PE matrix is stronger than the corresponding interactions between CNTs and PE. Thus, the results indicate that CCNTs are good potential candidates for lightweight, tough composites. (C) 2011 Elsevier Ltd. All rights reserved.
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