Journal article
3D printed barium titanate/poly-(vinylidene fluoride) nano-hybrid with anisotropic dielectric properties
Technical University of Denmark1
Silpakorn University2
Universidade Federal do ABC3
Department of Energy Conversion and Storage, Technical University of Denmark4
Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark5
Ceramic Engineering & Science, Department of Energy Conversion and Storage, Technical University of Denmark6
Electrospun BaTiO3 nanofibers (BTNFs) are synthesized and blended in a poly(vinylidene fluoride) (PVDF) matrix to obtain a flexible nano-hybrid composite with high dielectric constant (flexible high-k). The blending is performed with different BTNF contents (0.6, 4.5, 20 vol%). The rheological properties of the starting materials are optimized to shape the hybrid by the precision-extrusion-based fuse deposition modeling technique.
The 3D-printed BTNFs allow complex shapes with different degrees of fiber alignment as the result of printing shear stress and the chemical composition of the starting material. The dielectric properties of the nano-hybrid are controlled by anisotropy with an enhancement in the nanofiber cross direction (⊥), where the dielectric constant k⊥ at 1 kHz is increased to ca. 200 from 13 of the PVDF matrix.
Language: | English |
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Year: | 2017 |
Pages: | 12430-12440 |
ISSN: | 20507534 and 20507526 |
Types: | Journal article |
DOI: | 10.1039/c7tc03697c |
ORCIDs: | Bowen, Jacob R. , Esposito, Vincenzo , 0000-0002-9142-7362 and 0000-0003-0959-1428 |