Tailored ferroelectric responses and enhanced energy density in PVDF-based homopolymer/terpolymer blends
Article first published online: 2 JUN 2014
Copyright © 2014 Wiley Periodicals, Inc.
Journal of Applied Polymer Science
Volume 131, Issue 21, November 5, 2014
How to Cite
2014), Tailored ferroelectric responses and enhanced energy density in PVDF-based homopolymer/terpolymer blends. J. Appl. Polym. Sci., 131, 40994, doi: 10.1002/app.40994, , and (
- Issue published online: 11 AUG 2014
- Article first published online: 2 JUN 2014
- Manuscript Accepted: 9 MAY 2014
- Manuscript Received: 10 FEB 2014
- National Basic Research Program of China (973 Program) . Grant Number: 2014CB239500
- dielectric properties;
Blend of polymers is an effective way to tailor the ferroelectric responses and improve the energy storage properties of polymers. In this work, the microstructure and dielectric responses of the blends of poly(vinylidene fluoride) (PVDF) and poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) [P(VDF-TrFE-CFE)] have been studied. It is found that the addition of PVDF disturbs the crystallization process of P(VDF-TrFE-CFE), leading to lower crystallinity and smaller crystalline size. The aforementioned microstructure changes result in tailored ferroelectric responses. Dielectric responses show that the blend with 10 wt % PVDF achieves larger polarization response under high electric field (above 300 MV/m) due to the interfacial polarization. Because of the tailoring effect and the interfacial polarization, the blend with 10 wt % PVDF exhibits higher energy density and efficiency. Moreover, the breakdown strength (Eb) is also improved by adding a small amount of PVDF into the terpolymer. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40994.