Piezoelectric mono-filament extrusion for green energy applications from textiles

Electromechanical properties of piezoelectric materials allow the conversion from mechanical to electrical and vice versa. today,ceramic and polymer based piezoelectric fibre composite (pfc) structures and films are available in the market and are in use in many sensor applications. however,there is no flexible piezoelectric material available in fibre form that would enhance the spectrum of possible applications. in this study,polyamide based nylon 11 (pa-11) flexible piezoelectric mono-filament was successfully extruded via a continuous process on a customised melt-extruder.to gain the piezoelectric property,the polymer was processed under thermal,mechanical and electrical conditions,simultaneously which cause reorientation of the molecular chain and phase transformation of the polymer. resulting filament was cut into pieces,15cm in length,and aligned in between two electrodes. the voltage response of the structure was then investigated under impact.