Technical Article
Powered by:

Styrenic block copolymer/sulfonated graphene oxide composite membranes for highly bendable ionic polymer actuators with large ion concentration gradient

In this study, sulfonated graphene oxide (sGO) with a large enhanced sulfonation degree of 1.65?mmol?g?1 was simultaneously introduced as a highly ion conduction-activating carbonaceous filler for ionic polymer–metal composite (IPMC) actuator. The nanostructured styrenic block copolymer/sGO/ionic liquid (IL) composite membrane actuators revealed much larger actuation performance than top-ranked polyelectrolyte/IL actuators ever reported so far in terms of bending strain (0.88% under 2?V dc), initial strain rate (0.312% min?1), and charge-specific displacement (276.4?mm?C?1). Moreover, SSPB/sGO/IL actuators exhibited excellent actuation performance without drawbacks of conventional IPMCs, such as back-relaxation and early loss of inner solvent. In addition, via tracking the movement of the IL's anion through energy-dispersive X-ray spectroscopy (EDS) analysis, not only the transporting behaviour of IL but also the pumping effect with solvated ion complexes inside the actuator are confirmed for the first time.

» Author: Jang-Woo Lee, Taehoon Kwon, Youngjong Kang, Tae Hee Han, Chang Gi Cho, Soon Man Hong, Suk-Won Hwang, Chong Min Koo

» Reference: Composites Science and Technology, Volume 163

» Publication Date: 28/07/2018

» More Information

« Go to Technological Watch

AIMPLAS - Instituto Tecnológico del Plástico | C/ Gustave Eiffel, 4 (Valčncia Parc Tecnolňgic) | 46980 - PATERNA (Valencia) - SPAIN
(+34) 96 136 60 40

This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [609203].

The sole responsibility for the content of this website lies with the authors. It does not necessarily reflect the opinion of the EC. The EC is not responsible for any use that may be made of the information contained therein.