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3 April 2012 A structure model for Ionic Polymer-Metal Composite (IPMC)
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Abstract
IPMC was considered as a polyelectrolyte membrane sandwiched between two flat electrodes in most of its theoretical models. However, structural idealization (ignorance of the interface) may lead to problematic predictions; therefore a proper model to characterize IPMC structures is expected for a more sophisticated electrochemistry or deformation theory. This paper proposed a geometrical model for the electroless-plated palladium-electroded IPMC (Pd-IPMC), where it's treated as a composite containing three distinguished layers: upper electrode, interface layer, and the substrate membrane. Especially, fractal dimension was adopted to describe the rough contact surface between the upper electrode and the substrate membrane. And the interface was determined by the volume fraction of the palladium particles. Based on this model, we estimated the elastic modulus of Pd electrode, and the value was found to be far less than Pd metal. Furthermore, we estimated the tensile elastic modulus of Pd-IPMC, the result agrees well with the experimental one, which proved the applicability of the structure model.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Longfei Chang, Hualing Chen, and Zicai Zhu "A structure model for Ionic Polymer-Metal Composite (IPMC)", Proc. SPIE 8340, Electroactive Polymer Actuators and Devices (EAPAD) 2012, 83402K (3 April 2012); https://doi.org/10.1117/12.917424
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