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Proceedings Paper

Conductive nanoparticles in electro activated shape memory polymer sensor and actuator
Author(s): Jinsong Leng; Haibao Lu; Yanju Liu; Shanyi Du
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Paper Abstract

There is a strong interest in the use of conductive shape memory polymer (SMP) for actuation by passing an electrical current. This paper presents a systematic study on the effect of multi-walled carbon nanotubes (MWCNTs) and carbon nanoparticles on the electro activate shape memory polymer (SMP). The first is the fabrication and characterization of styrene-based SMP filled with MWCNTs was investigated. Then the resistivity of 8 wt% MWNTs sample is 80 ohm•cm obtained by using four-point probe Van De Pawn method, and for 8.0×2.0×0.2 cm3 rectangle sheet, it can be triggered by passing an electrical current with a constant voltage of 200 V. The second is focused on the effect of conductive particulate and fibrous fillers on the electrical property of composite. The electrical conductivity of the composites achieves 8.73×10-2, 9.63×10-2 and 1.13×10-1 S/cm by DC measurement and 0.12, 1.05 and 3 S/cm by four-point probe Van De Pauw method. Their shape recovery can be activated by passing an electrical current of 25 V voltages. In this paper, the sensors using conducting SMP composites testified by the temperature-dependent resistance and strain-dependent resistance tests. At the same time, the shape self-recovery of SMPs and their composites when heated above transition temperature acts as actuator.

Paper Details

Date Published: 26 March 2008
PDF: 8 pages
Proc. SPIE 6931, Nanosensors and Microsensors for Bio-Systems 2008, 693109 (26 March 2008); doi: 10.1117/12.775743
Show Author Affiliations
Jinsong Leng, Harbin Institute of Technology (China)
Haibao Lu, Harbin Institute of Technology (China)
Yanju Liu, Harbin Institute of Technology (China)
Shanyi Du, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 6931:
Nanosensors and Microsensors for Bio-Systems 2008
Vijay K. Varadan, Editor(s)

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