Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam
A straightforward scalable method for synthesizing β-poly (vinylidene fluoride) polymer foam from a sugar template has been used. A characteristic β-phase of the foam was confirmed by infrared and micro-Raman spectroscopy with significant enhancement observed after poling. The electrical polarizatio...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/168826 |
| _version_ | 1811694254537310208 |
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| author | Abdelaziem, Ali Mohamed, Ayman M. Yousry, Yasmin M. Borayek, Ramadan Razeen, Ahmed S. Zhang, Nan Chen, Shuting Zhang, Lei Lin, Ke Liu, Zheng |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Abdelaziem, Ali Mohamed, Ayman M. Yousry, Yasmin M. Borayek, Ramadan Razeen, Ahmed S. Zhang, Nan Chen, Shuting Zhang, Lei Lin, Ke Liu, Zheng |
| author_sort | Abdelaziem, Ali |
| collection | NTU |
| description | A straightforward scalable method for synthesizing β-poly (vinylidene fluoride) polymer foam from a sugar template has been used. A characteristic β-phase of the foam was confirmed by infrared and micro-Raman spectroscopy with significant enhancement observed after poling. The electrical polarization of the foam revealed a ferroelectric nature with dielectric strength higher than 30 kV/cm which is close to the commercial value. Poled samples had a dielectric constant of 5.5, higher than the value of the unpoled sample (3.05). These values appear stable over the low-frequency range from 1 kHz to 1 MHz. Significant reverse behavior was observed at higher frequencies from 300 GHz to 3 THz frequencies. It was found that the open-cell foam with a porosity of 88% has the lowest dielectric constant value (1.07 at 1.8 THz, reaching 1.04 at 2.9 THz) compared to the foam with 20% porosity (2.17 at 1 THz, reaching 1.83 at 3 THz). Furthermore, the Maxwell Garnett model, in conjunction with THz imaging, confirmed the impact of porosity on dielectric properties. These findings pave the way for the efficient fabrication of ferroelectric porous polymer structures that can be used in dielectric switching at the kHz-THz frequency range. |
| first_indexed | 2024-10-01T07:04:39Z |
| format | Journal Article |
| id | ntu-10356/168826 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:04:39Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1688262023-06-23T15:40:47Z Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam Abdelaziem, Ali Mohamed, Ayman M. Yousry, Yasmin M. Borayek, Ramadan Razeen, Ahmed S. Zhang, Nan Chen, Shuting Zhang, Lei Lin, Ke Liu, Zheng School of Materials Science and Engineering School of Electrical and Electronic Engineering Institute of Materials Research and Engineering (IMRE), A*STAR CINTRA CNRS/NTU/THALES, UMI 3288 Engineering::Materials Engineering::Electrical and electronic engineering Dielectrics Property Electrical Polarization A straightforward scalable method for synthesizing β-poly (vinylidene fluoride) polymer foam from a sugar template has been used. A characteristic β-phase of the foam was confirmed by infrared and micro-Raman spectroscopy with significant enhancement observed after poling. The electrical polarization of the foam revealed a ferroelectric nature with dielectric strength higher than 30 kV/cm which is close to the commercial value. Poled samples had a dielectric constant of 5.5, higher than the value of the unpoled sample (3.05). These values appear stable over the low-frequency range from 1 kHz to 1 MHz. Significant reverse behavior was observed at higher frequencies from 300 GHz to 3 THz frequencies. It was found that the open-cell foam with a porosity of 88% has the lowest dielectric constant value (1.07 at 1.8 THz, reaching 1.04 at 2.9 THz) compared to the foam with 20% porosity (2.17 at 1 THz, reaching 1.83 at 3 THz). Furthermore, the Maxwell Garnett model, in conjunction with THz imaging, confirmed the impact of porosity on dielectric properties. These findings pave the way for the efficient fabrication of ferroelectric porous polymer structures that can be used in dielectric switching at the kHz-THz frequency range. Published version 2023-06-20T01:16:24Z 2023-06-20T01:16:24Z 2023 Journal Article Abdelaziem, A., Mohamed, A. M., Yousry, Y. M., Borayek, R., Razeen, A. S., Zhang, N., Chen, S., Zhang, L., Lin, K. & Liu, Z. (2023). Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam. Journal of Applied Physics, 133(12), 124101-. https://dx.doi.org/10.1063/5.0132002 0021-8979 https://hdl.handle.net/10356/168826 10.1063/5.0132002 2-s2.0-85150882421 12 133 124101 en Journal of Applied Physics © 2023 Author(s). All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Abdelaziem, A., Mohamed, A. M., Yousry, Y. M., Borayek, R., Razeen, A. S., Zhang, N., Chen, S., Zhang, L., Lin, K. & Liu, Z. (2023). Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam. Journal of Applied Physics, 133(12), 124101 and may be found at https://doi.org/10.1063/5.0132002. application/pdf |
| spellingShingle | Engineering::Materials Engineering::Electrical and electronic engineering Dielectrics Property Electrical Polarization Abdelaziem, Ali Mohamed, Ayman M. Yousry, Yasmin M. Borayek, Ramadan Razeen, Ahmed S. Zhang, Nan Chen, Shuting Zhang, Lei Lin, Ke Liu, Zheng Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam |
| title | Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam |
| title_full | Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam |
| title_fullStr | Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam |
| title_full_unstemmed | Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam |
| title_short | Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam |
| title_sort | effect of poling on the dielectric properties of synthesized β poly vinylidene fluoride foam |
| topic | Engineering::Materials Engineering::Electrical and electronic engineering Dielectrics Property Electrical Polarization |
| url | https://hdl.handle.net/10356/168826 |
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