We report on the role of poly(vinylpyrrolidone) (PVP) additives in PVP/poly(vinylidene fluoride) (PVDF) polymer blends on compositional transformation dependent dielectric behavior. Our results show that the dielectric performance is controlled… Click to show full abstract
We report on the role of poly(vinylpyrrolidone) (PVP) additives in PVP/poly(vinylidene fluoride) (PVDF) polymer blends on compositional transformation dependent dielectric behavior. Our results show that the dielectric performance is controlled by spherulite growth, dipole–dipole interaction, and porosity in PVP/PVDF blends. The breakdown strength, energy density, and efficiency of polymer blends was improved through reducing the content of the α-PVDF crystalline phase. The maximum energy density of 4.6 J cm–3 at 3369 kV cm–1 was obtained which was 77% and 283% higher than those of pristine PVDF and commercially available biaxially oriented polypropylene, respectively, and was further investigated by piezoforce microscopy.
Journal Title: ACS Applied Energy Materials
Year Published: 2019
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