High dielectric VDF/TrFE/CTFE terpolymers prepared by hydrogenation of VDF/CTFE copolymers: Synthesis and characterization
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- High dielectric VDF/TrFE/CTFE terpolymers prepared by hydrogenation of VDF/CTFE copolymers: Synthesis and characterization
- 发表刊物：
- Macromolecules
- 摘要：
- This paper discusses a new chemical route involving VDF/CTFE copolymerization and partial hydrogena-
tion of CTFE units to prepare VDF/TrFE/CTFE terpolymers that exhibit several common features of a typical relaxor ferroelectric behavior, such as a diffuse phase transition, high dielectric constant at ambient temperature, and dielectric relaxation (large frequency dependence). In addition, we also observed the similar bulky CTFE effect in the VDF/TrFE/CTFE terpolymer, with the reduction of melting and Curie temperatures (relative to the thickness of ferroelectric crystalline domains). However, the microstructure of this terpolymer with a head-to-head VDF-TrFE sequence is very different from that of a head-to-tail VDF-TrFE sequence in the corresponding terpolymer prepared by direct terpolymerization. Consequently, the dielectric constant and Curie temperature vs terpolymer com-position are very different. The overall dielectric constant is
significantly reduced in the current terpolymer.
- 合写作者：
- Zhiming Wang; Zhicheng Zhang; T. C. Mike Chung
- 卷号：
- Volume: 39 Issue13
- 页面范围：
- 4268-4271
- 是否译文：
- 否
- 发表时间：
- 2006-06-27