Enhancement of dielectric and energy density properties in the PVDF‐based copolymer/terpolymer blends. Issue 6 (7th April 2015)

• Record Type: Journal Article
• Authors: Ullah, Amir; ur Rahman, Ata; Won Ahn, Chang; Rahman, Muneeb‐ur; Ullah, Aman; Rehman, Zia‐ur; Javid Iqbal, Muhammad; Kim, Ill Won
• Is Part Of: Polymer engineering & science. Volume 55:Issue 6(2015:Jun.)
• Page Start: 1396
• Page End: 1402
• Publication Date: 2015-04-07
• Subjects: Polymer engineering -- Periodicals; Polymers -- Periodicals; 668.9
• DOI: 10.1002/pen.24083
• Languages: English
• ISSNs: 0032-3888

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>We investigated the high dielectric constant and energy storage density for the blends of P(VDF‐TrFE) copolymer and P(VDF‐TrFE‐CFE) terpolymer. The degradation of coercive field (<italic>E</italic>_c) and remnant polarization (<italic>P</italic>_r) of the copolymer under an electric field of 125 MV/m was observed and the copolymer changed into a typical relaxor ferroelectric with doping of terpolymer. The dielectric constant of P(VDF‐TrFE) was found to be ∼11, but was enhanced to ∼55 by blending with P(VDF‐TrFE‐CFE) at 60 wt%. Consequently, a higher energy density of about 4.2 J/cm³ was obtained in these blends in contrast to about 3.6 J/cm³ in the terpolymer at the very low applied electric field of 125 MV/m. These results demonstrate the promise of blend approaches for tailoring and enhancing the dielectric properties of ferroelectric polymers. POLYM. ENG. SCI., 55:1396–1402, 2015. © 2015 Society of Plastics Engineers</p> </abstract>