Styrenic block copolymer/sulfonated graphene oxide composite membranes for highly bendable ionic polymer actuators with large ion concentration gradient
- Title
- Styrenic block copolymer/sulfonated graphene oxide composite membranes for highly bendable ionic polymer actuators with large ion concentration gradient
- Author
- 강영종
- Keywords
- Nanocomposites; Functional composites; Sulfonated styrenic pentablock copolymer (SSPB); Graphene oxide (GO); Actuator
- Issue Date
- 2018-07
- Publisher
- ELSEVIER SCI LTD
- Citation
- COMPOSITES SCIENCE AND TECHNOLOGY, v. 163, page. 63-70
- Abstract
- 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.
- URI
- https://www.sciencedirect.com/science/article/abs/pii/S0266353818301945?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/119400
- ISSN
- 0266-3538; 1879-1050
- DOI
- 10.1016/j.compscitech.2018.05.002
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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