Abstract
AbstractThe development of new thermoplastic polymer‐based piezoelectric sensors with filament geometry is described. These filaments are appropriate for integration into textiles and provide new possibilities in the design and development of low‐cost flexible sensors produced at high rates. The developed three‐layered piezoelectric monofilaments have been produced by coextrusion using poly(vinylidene fluoride) and two different polypropylene‐based electrically conductive polymers. Filaments with about 800‐µm diameter, producing electrical signals proportional to the mechanical deformation applied, were obtained. The signal output has been found adequate for straightforward use with conventional piezoelectric signal conditioning systems. One of the conductive polymers tested allowed better filament geometry and process stability. This article describes the coextrusion production process and the results obtained in the electromechanical tests performed. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40710.
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