Thermal Annealing Effects on the Physical Properties of Styrenic Pentablock Ionomers and Their Electromechanical Responses
- Thermal Annealing Effects on the Physical Properties of Styrenic Pentablock Ionomers and Their Electromechanical Responses
- 이장우; 이진홍; 김민호; 홍순만; 구종민
- block copolymer; Ionic Polymer-Metal Composites (IPMC); ionic polymer; Sulfonated Styrenic Pentablock Copolymer; Actuator; Annealing Effect
- Issue Date
- Journal of nanoscience and nanotechnology
- VOL 13, NO 5, 3606-3610
- Thermal annealing effect on the physical properties of two ionic (poly((t-butyl-styrene)-b-(ethylene-r-propylene)-b-(styrene-r-styrene sulfonate)-b-(ethylene-r-propylene)-b-(t-butyl-styrene (SSPB) pentablock copolymers with different ion exchange capacities (IEC; 1.5 and 2.0 meq/g) and their electromechanical responses in ionic polymer-metal composite (IPMC) devices have been investigated. The ionic SSPB formed the microphase-separated morphology on the several tens nanometer scale and the selectively sulfonated styrene middle blocks formed the ionic channels through which ions can pass in the membrane. The thermal annealing at a high temperature led to the well developed interconnectivity between adjacent ionic channels, and thus enhanced the ion conductivity and mechanical strength of membranes, resulting in an actuation enhancement of the SSPB-based ionic actuator.
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