Lee, Jang-Woo Yu, Seunggun Hong, Soon Man Koo, Chong Min 2024-01-20T12:05:19Z 2024-01-20T12:05:19Z 2021-09-01 2013-06 2050-7526 https://pubs.kist.re.kr/handle/201004/128038 The present work demonstrates that nanostructured middle-block sulfonated styrenic pentablock copolymer ionomer (SSPB)/sulfonated montmorillonite (s-MMT) nanocomposite membranes, incorporating bulky imidazolium ionic liquid (IL), act as novel polymer electrolytes for air-working ionic polymer-metal composite (IPMC) actuators. The microphase-separated big-size ionic domains of the SSPB on the scale of several tens of nanometers and the role of s-MMT as an ionic bridge between the ion channels resulted in not only unexpectedly larger ion conductivity, larger air-working bending displacement and faster bending rate, without conventional IPMC drawbacks, including back relaxation and a sacrifice of mechanical strength, but also higher energy efficiency actuation than Nafion. Interestingly, the bending displacement, bending rate, and charge-specific displacement of the nanocomposite IPMC increased with the increase in bulkiness of the ILs because of the strong ion pumping effect of the bulky immidazolium cations in the size-matched big ion channels of the nanocomposite membrane. English ROYAL SOC CHEMISTRY POLYMER-METAL COMPOSITES RADIATION-GRAFTED FLUOROPOLYMERS IONIC LIQUIDS CARBON NANOTUBE ACTUATORS PERFORMANCE High-strain air-working soft transducers produced from nanostructured block copolymer ionomer/silicate/ionic liquid nanocomposite membranes Article 10.1039/c3tc30414k 1 JOURNAL OF MATERIALS CHEMISTRY C, v.1, no.24, pp.3784 - 3793 JOURNAL OF MATERIALS CHEMISTRY C 1 24 3784 3793 scie scopus 000319745400003 2-s2.0-84878679986 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article POLYMER-METAL COMPOSITES RADIATION-GRAFTED FLUOROPOLYMERS IONIC LIQUIDS CARBON NANOTUBE ACTUATORS PERFORMANCE