15 April 2016 Embedded Carbide-derived Carbon (CDC) particles in polypyrrole (PPy) for linear actuator
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Abstract
Conducting polymer linear actuators, for example sodium dodecylbenzenesulfonate (NaDBS) doped polypyrrole (PPy/DBS), have shown moderate strain and stress. The goal of this work was to increase the obtainable strain and stress by adding additional active material to PPy/DBS. In recent year’s carbide-derived carbon (CDC)-based materials have been applied in actuators; however, the obtained displacement and actuation speed has been low comparing to conducting polymer based actuators. In the present work, a CDC-PPy hybrid was synthesized electrochemically and polyoxometalate (POM) – phosphotungstic acid – was used to attach charge to CDC particles. The CDC-POM served in the presence of NaDBS as an additional electrolyte. Cyclic voltammetry and chronopotentiometric electrochemomechanical deformation (ECMD) measurements were performed in Lithium bis(trifluoromethanesulfonyl)- imide (LiTFSI) aqueous electrolyte. The ECMD measurements revealed that the hybrid CDC-PPy material exhibited higher force and strain in comparison to PPy/DBS films. The new material was investigated by scanning electron microscopy (SEM) to evaluate CDC particle embedding in the polymer network.
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Zane Zondaka, Robert Valner, Alvo Aabloo, Tarmo Tamm, Rudolf Kiefer, "Embedded Carbide-derived Carbon (CDC) particles in polypyrrole (PPy) for linear actuator", Proc. SPIE 9798, Electroactive Polymer Actuators and Devices (EAPAD) 2016, 97981H (15 April 2016); doi: 10.1117/12.2218674; https://doi.org/10.1117/12.2218674
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