Jump to main content
Jump to site search


Physical pinning and chemical crosslinking induced relaxor ferroelectric behavior in P(VDF-ter-TrFE-ter-VA) terpolymers

Abstract

Relaxor ferroelectric polymers, having high energy storage density and efficiency, are rapidly developing for reliable and compact dielectric film capacitors. Until now, they are based on highly fluorinated monomers lacking functionalities for further modifications, such as good dispersion of nanoparticles or facile crosslinking, to gain enhanced properties. In this work, we study the electroactive properties of a novel class of poly(vinylidene fluoride-ter-trifluoroethylene-ter-vinyl alcohol) (P(VDF-ter-TrFE-ter-VA)) terpolymers for capacitive energy storage applications. Additionally, we show that the VA units in the terpolymers can be crosslinked using facile urethane chemistry. It is found that introducing VA in the terpolymer backbone leads to cocrystallization with the fluorinated monomeric constituents. The VA defects promote the formation of TTTG monomer sequences favoring relaxor ferroelectric behavior. Consequently, the Curie transition is strongly reduced compared to P(VDF-co-TrFE) analogues. Moreover, chemical crosslinking of P(VDF-ter-TrFE-ter-VA) terpolymers results in extremely slim hysteresis loops due to the increase in the relative amount of the disordered paraelectric phase and ultrafine crystallites. Therefore, this new class of relaxor ferroelectric polymers, wherein physical pinning and chemical crosslinking are combined, show great promise for future advanced applications.

Back to tab navigation

Supplementary files

Publication details

The article was received on 30 Nov 2018, accepted on 07 Jan 2019 and first published on 08 Jan 2019


Article type: Paper
DOI: 10.1039/C8TA11534F
Citation: J. Mater. Chem. A, 2019, Accepted Manuscript
  •   Request permissions

    Physical pinning and chemical crosslinking induced relaxor ferroelectric behavior in P(VDF-ter-TrFE-ter-VA) terpolymers

    N. Meereboer, I. Terzic, P. van der Steeg, G. Portale and K. Loos, J. Mater. Chem. A, 2019, Accepted Manuscript , DOI: 10.1039/C8TA11534F

Search articles by author

Spotlight

Advertisements