Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10711
Title: Tunable carbon nanotube ionic polymer actuators that are operable in dry conditions
Authors: Yip, J 
Ding, F 
Yick, KL 
Yuen, CWM
Lee, TT
Choy, WH
Keywords: Actuator
Carbon nanotubes
Ionic polymer-metal composite (IPMC)
Nafion
Issue Date: 2012
Publisher: Elsevier
Source: Sensors and actuators. B, Chemical, 2012, v. 162, no. 1, p. 76-81 How to cite?
Journal: Sensors and actuators. B, Chemical 
Abstract: Actuators are widely used in intelligent material systems. However, electromagnetic, piezoelectric or shape memory alloy actuators are too heavy, complicated and too slow for such applications. In contrast, electroactive polymers (EAPs) are relatively lightweight, rather simple and fast enough to suit the requirements of an actuator. In this study, we have developed CNT ionic polymer actuators that are operable in a wide range of humidities. Optimum performance can be tunable by the addition of different CNT concentrations. A low percentage of CNT will form well distributed sponge-like structures which enable effective entrapment of moisture within the polymer matrix and thus favor the work of the actuator in dry environments, while a higher CNT percentage will lower the water absorption rate, and increase the elastic pressure of the matrix to reduce swelling and deformation. Therefore, the actuators also work well in very high humidity. It is likely that this actuator will have a wide range of bio-inspired applications.
URI: http://hdl.handle.net/10397/10711
ISSN: 0925-4005
EISSN: 1873-3077
DOI: 10.1016/j.snb.2011.12.038
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