Design, synthesis and processing of PVDF-based dielectric polymers
| Autor: | Shan Wang, Qi Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
dielectric thin films
pyroelectricity dielectric polarisation ferroelectric ceramics polymer films permittivity relaxor ferroelectrics ferroelectric materials ferroelectric transitions crystal structure piezoelectricity chemical synthesis non-volatile memories film capacitors electrocaloric refrigeration actuators anti-FE-like dielectric response poly(vinylidenefluoride)-based dielectric polymers dielectric polarisation behaviour PVDF-based dielectric polymers ferroelectric properties pyroelectric properties piezoelectric properties dielectric properties PVDF homopolymer pyroelectric sensors piezoelectric sensors relaxor FE normal FE molecular structure dielectric polymers Materials of engineering and construction. Mechanics of materials TA401-492 |
| Zdroj: | IET Nanodielectrics (2018) |
| Druh dokumentu: | article |
| ISSN: | 2514-3255 |
| DOI: | 10.1049/iet-nde.2018.0003 |
| Popis: | Due to the appealing piezoelectric, pyroelectric, and ferroelectric (FE) properties, poly(vinylidene fluoride) (PVDF)-based dielectric polymers have been attracting great attention from both the academic and industrial communities. Depending on the molecular structure and the processing method, PVDF-based dielectric polymers can exhibit rich dielectric polarisation behaviours covering normal FE, relaxor FE, anti-FE-like and linear dielectric responses, which enables a wide spectrum of application fields such as non-volatile memories, piezoelectric and pyroelectric sensors, actuators, electrocaloric refrigeration, and film capacitors. In this study, the authors first briefly introduce the current practical/promising applications of PVDF-based dielectric polymers, and the corresponding optimum dielectric polarisation behaviour and crystal structure are proposed accordingly. The chemical synthesis and modification strategies for obtaining various fluoropolymers beyond PVDF homopolymer are then summarised with an emphasis on the relationship between the molecular structure and the dielectric polarisation behaviour. In addition, the effect of processing methods on the crystal structure and dielectric properties of the PVDF-based polymers is discussed. Finally, some newly developed processing techniques applicable to PVDF-based polymers are described. |
| Databáze: | Directory of Open Access Journals |
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