Preparation, characterization and permeability evaluation of poly(vinylidene fluoride) composites with ZnO particles for flexible pipelines

High-Performance Flexible Piezoelectric Nanogenerator Based on Electrospun PVDF-BaTiO3 Nanofibers for Self-Powered Vibration Sensing Applications

“…Ferroelectric fluoropolymers are ideal candidates for the fabrication of mechanical energy scavengers and self-powered sensors, as they are characterized by mechanical flexibility, lightness, reversible piezo- and pyroelectric properties, and low energy consumption. , Among them, PVDF-based flexible piezoelectric nanogenerators (PENGs) attract significant interest in this field owing to their appreciable piezoelectric coefficient values, high flexibility, easy processing, and stability under high electric field. For achieving good piezoelectric performance in PVDF, it must be in the electroactive β-phase where the dipoles are oriented in the all-trans (TTTT) planar zig–zag conformation. − For obtaining and enhancing the β-phase of PVDF, several strategies such as new and improved fabrication techniques, ,,− incorporation of organic and inorganic piezoelectric materials such as ZnO, BaTiO 3 , , etc., and addition of conductive materials such as graphene, , CNT, etc. and nonconductive fillers such as nanoclay, , DNA, etc.…”

Mechanical and gas permeation behaviour of PVDF/PA6 blend composite

“…Literature reported the peaks corresponding to α phase, β phase and γ phase in PVDF, and the absorption bands at 763 cm -1 , 973 cm -1 and 1381 cm -1 correspond to tensile vibration of α phase PVDF [14][15][16][17][18]. The peaks at 1278 cm -1 and 841 cm -1 were β -phase PVDF [19,20]. In Figure 4, pure PVDF showed strong absorption bands at 763 cm -1 , 973 cm -1 and 1379 cm -1 , very weak absorption bands at 1278 cm -1 and 841 cm -1 , and no peak at 1234 cm -1 , indicating that pure PVDF was mainly composed of non-polar α crystals.…”