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(Color online) XRD patterns for the blend films with different VDF oligomer/PVDF ratios.
(Color online) The dielectric constant at both low electric field and high field, Young’s modulus and dielectric breakdown strength as experimentally measured for the VDF oligomer and PVDF blend films with different content of PVDF.
(Color online) (a) The D-E hysteresis loop of the VDF/PVDF (80/20) measured under bi-polar electric field. The shaded area indicates the energy density of the film (∼27.3 J/cm3). The hysteresis loops at unipolar electric fields are shown as the inset. (b) Discharged energy density as a function of applied field amplitude for VDF oligomer/PVDF blend films.
(Color online) Schematic illustrations of the microstructure of: (a) PVDF, (b) VDF oligomer, and (c) VDF oligomer/PVDF blend. The green (or light) and black lines represent PVDF and VDF oligomer molecular chains, respectively. The thicknesses of the crystalline and amorphous parts are not drawn to scale.
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