期刊
POLYMERS
卷 11, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/polym11122033
关键词
poly(vinylidene fluoride); organic ferroelectric polymers; memory; synapse
资金
- Natural Science Foundation of China [61804055]
- National Postdoctoral Program for Innovative Talents [BX201600052]
- Shanghai Science and Technology Innovation Action Plan [19JC1416700]
- Shanghai Sailing Program [17YF1404200]
- Shanghai Education Development Foundation
- Shanghai Municipal Education Commission [17CG24]
- Postdoctoral Science Foundation of China [2017M611501]
Poly(vinylidene fluoride) (PVDF) and its copolymers are key polymers, displaying properties such as flexibility and electroactive responses, including piezoelectricity, pyroelectricity, and ferroelectricity. In the past several years, they have been applied in numerous applications, such as memory, transducers, actuators, and energy harvesting and have shown thriving prospects in the ongoing research and commercialization process. The crystalline polymorphs of PVDF can present nonpolar alpha, epsilon phase and polar beta, gamma, and delta phases with different processing methods. The copolymers, such as poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)), can crystallize directly into a phase analogous to the beta phase of PVDF. Since the beta phase shows the highest dipole moment among polar phases, many reproducible and efficient methods producing beta-phase PVDF and its copolymer have been proposed. In this review, PVDF and its copolymer films prepared by spin-coating and Langmuir-Blodgett (LB) method are introduced, and relevant characterization techniques are highlighted. Finally, the development of memory, artificial synapses, and medical applications based on PVDF and its copolymers is elaborated.
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