Multiscale understanding of electric polarization in poly(vinylidene fluoride)-based ferroelectric polymers
dc.contributor.author | Meng, N | |
dc.contributor.author | Ren, X | |
dc.contributor.author | Zhu, X | |
dc.contributor.author | Wu, J | |
dc.contributor.author | Yang, B | |
dc.contributor.author | Gao, F | |
dc.contributor.author | Zhang, H | |
dc.contributor.author | Liao, Y | |
dc.contributor.author | Bilotti, E | |
dc.contributor.author | Reece, MJ | |
dc.contributor.author | Yan, H | |
dc.date.accessioned | 2020-11-26T10:03:07Z | |
dc.date.available | 2020-11-26T10:03:07Z | |
dc.date.issued | 2020-01-01 | |
dc.identifier.issn | 2050-7526 | |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/68723 | |
dc.description.abstract | Poly(vinylidene fluoride) (PVDF) and PVDF-based copolymers with trifluoroethylene (PVDF-TrFE) have attracted considerable academic and industrial interest due to their ferroelectric properties, which are only present in very few polymers. However, the underlying fundamentals of molecular ordering and induced polarizations are complex and not fully understood. Herein, PVDF, PVDF-TrFE and their blends, prepared using melt extrusion and hot pressing, have been selected to obtain controlled case studies with well-defined chain ordering and microstructures. Impedance analysis and terahertz time-domain spectroscopy (THz-TDS) are exploited to investigate electric polarization in PVDF-based polymers at different length scales. The extruded ferroelectric films show in-plane chain orientation and higher domain wall density compared to hot pressed films with randomly-distributed polymer chains, which favors the polarization at low frequencies (Hz to MHz), as concluded from the higher dielectric constants and more prominent high electric field polarization switching features. However, the domain walls cannot respond at high frequencies, which leads to lower dielectric constants in the extruded films at THz frequencies. | en_US |
dc.publisher | Royal Society of Chemistry | en_US |
dc.relation.ispartof | Journal of Materials Chemistry C | |
dc.rights | This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | |
dc.rights | Attribution 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/us/ | * |
dc.title | Multiscale understanding of electric polarization in poly(vinylidene fluoride)-based ferroelectric polymers | en_US |
dc.type | Article | en_US |
dc.rights.holder | © 2020, The Author(s) | |
dc.identifier.doi | 10.1039/d0tc04310a | |
pubs.notes | Not known | en_US |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |
qmul.funder | MAnufacture of Safe and Sustainable Volatile Element functional materials - MASSIVE Materials::Engineering and Physical Sciences Research Council | en_US |
Files in this item
This item appears in the following Collection(s)
Except where otherwise noted, this item's license is described as This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.