Polymeric Artificial Muscles are Linear Faradaic Motors

Abstract:

Engineers, physicists and robot designers use to consider polymeric bilayer actuators (or artificial muscles) as low reliable devices for soft tools or soft robotic developments. Here we present the mechanical (movement rate and position) characterization of a polypyrrole/tape bilayer bending actuator. The polypyrrole film was synthesized in presence of dodecyl-benzene-sulphonate (DBS^-) and ClO₄^- anions: it exchanges cations during subsequent oxidation/reduction reactions. The angular rate of the movement results a linear function of the applied current and the described angle is a linear function of the consumed charge. The correlation coefficients overcame 0.99: electro-chemo-mechanical polymeric motors are full reliable for technological applications. The electrochemical model explaining the relationships between charge, film volume variation, mechanical work, force and displacement, strain and stress is also presented.

• Periodical: Key Engineering Materials (Volume 644)
• Pages: 137-144
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.644.137
• Online since: May 2015
• Authors: Laura L. Valero*, Toribio Fernandez Otero, Jose Gabriel Martinez
• Keywords: Artificial Muscles, Movement Control, Polymeric Faradaic Motors, Position Control

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