Lee, Jang-Woo Kwon, Taehoon Kang, Youngjong Han, Tae Hee Cho, Chang Gi Hong, Soon Man Hwang, Suk-Won Koo, Chong Min 2024-01-19T22:04:33Z 2024-01-19T22:04:33Z 2022-01-10 2018-07-28 0266-3538 https://pubs.kist.re.kr/handle/201004/121131 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. English ELSEVIER SCI LTD RADIATION-GRAFTED FLUOROPOLYMERS METAL COMPOSITES NANOCOMPOSITE MEMBRANES ARTIFICIAL MUSCLES TRANSDUCERS PERFORMANCE LIQUIDS CONDUCTIVITY MECHANISMS ELECTRODES Styrenic block copolymer/sulfonated graphene oxide composite membranes for highly bendable ionic polymer actuators with large ion concentration gradient Article 10.1016/j.compscitech.2018.05.002 1 COMPOSITES SCIENCE AND TECHNOLOGY, v.163, pp.63 - 70 COMPOSITES SCIENCE AND TECHNOLOGY 163 63 70 scie scopus 000438323000009 2-s2.0-85046745678 Materials Science, Composites Materials Science Article RADIATION-GRAFTED FLUOROPOLYMERS METAL COMPOSITES NANOCOMPOSITE MEMBRANES ARTIFICIAL MUSCLES TRANSDUCERS PERFORMANCE LIQUIDS CONDUCTIVITY MECHANISMS ELECTRODES Nanocomposites Functional composites Sulfonated styrenic pentablock copolymer (SSPB) Graphene oxide (GO) Actuator