期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 75, 期 -, 页码 15-21出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2012.11.019
关键词
Carbon fibers; Polymer-matrix composites (PMCs); Smart materials; Electrical properties; Mechanical properties
资金
- National Natural Science Foundation of China [50933001, 51222301, U1134005]
- Program for New Century Excellent Talents in University [NCET-10-0393]
- Fundamental Research Funds for the Central Universities [2012ZG0002]
Bio-based polyester (BE) was synthesized through polycondensation using the plant-derived resources as the starting materials. Vapor grown carbon nanofiber (VGCF) was then incorporated into BE to prepare BE/VGCF composites by simple melting blending. The uniform dispersion of VGCF and fairly strong interfacial adhesion between BE and VGCF led to a significant improvement in the mechanical properties of the composites. Besides, the incorporation of VGCF successfully converted the insulating BE into electrically conductive composites with a percolation threshold of 2.5 vol.%. The composites showed excellent electroactive shape memory properties, which reached a shape recovery ratio of 97% within 90 s with a direct current voltage of 20 V. The combination of the significantly improved mechanical properties and excellent electroactive shape memory performance of BE/VGCF composites opens up the new opportunity for the electroactive actuator materials in a sustainable manner. (c) 2012 Elsevier Ltd. All rights reserved.
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