Molar enthalpy of the polypyrrole electrochemistry |
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| Authors: | TF Otero MTeresa Cortes I Boyano |
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| Institution: | 1. Lab. of Electrochemistry, Intelligent Materials and Devices, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, Cartagena 30203, Spain;2. Departamento de Qu??mica, Universidad de los Andes, Edificio A, tercer piso, Carrera 1 # 18A –10 Bogotá, Colombia;3. Lab. Ampliación de Quimica-Fisica, Universidad del Pa??s Vasco, Pso. Manuel de Lardizábal 3, San Sebastián 20009/20010, Spain |
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| Abstract: | The kinetics of the angular movement of a triple-layer muscle working potentiostatically under different temperatures allowed the obtention of both the activation energy and the molar enthalpy of the process. By compaction of a polypyrrole film under constant temperature and at a constant cathodic potential, followed by a subsequent oxidation at a constant anodic potential under different temperatures, the molar enthalpy was obtained by application of the ESCR model. Similar results, 27.1 kJ/mol, from muscles, versus 27.7 kJ/mol, from relaxation experiments, were obtained. |
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| Keywords: | Artificial muscle Conformational relaxation Anodic compaction Cation exchange Enthalpy |
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