Development of poly(vinylidene fluoride)/thermoplastic polyurethane/carbon black‐polypyrrole composites with enhanced piezoelectric properties

Poly(vinylidene fluoride)/thermoplastic polyurethane (PVDF/TPU) composites filled with carbon-black polypyrrole were prepared via melt compounding followed by compression molding and fused filament fabrication. CB-PPy was added to the blends from 0 up 15% possible act as nucleating filler for PVDF β phase in order increase its piezoelectric response. The influence of blending TPU addition on overall crystallinity, content phase, response investigated differential scanning calorimetry (DSC), Fourier-transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD) determination coefficient (d33). It found that induced an crystallinity degree PVDF. Moreover, although decreased CB-PPy, percentage increased. This effect is more significant samples concentration higher than 6 wt%. As expected, d33 increased Furthermore, 3D printed displayed lower reduced responses when compared molded same composition.