Effect of graphene oxide on the ferroelectric properties of P(VDF-TrFE) (56/44)

N. Sigamani, Z. Ounaies, H. Sodano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Graphene oxide (GO) based poly (vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) (56/44) nanocomposite films were prepared using solution casting. Differential scanning calorimetry results showed increase in the crystallinity at lower GO content up to 0.3 wt %, where the 0.3 wt % GO-copolymer showed ∼13 % higher crystallinity than the pure copolymer under similar annealing conditions. However, at higher GO content, the high aspect ratio GO sheets suppress the crystallization of the polymer, resulting in 3 % lower crystallinity than the pure copolymer. The dielectric permittivity of the GO-copolymer showed improvement, likely due to the interfacial interaction between GO and polymer dipoles and also due to the higher crystallinity. At 20 Hz, the dielectric permittivity increased from ∼14.5 for pure copolymer to ∼18 for 0.3 wt % GO copolymer. Similarly, electrical conductivity of the GO-copolymer increased with GO content; however, even at the 0.6 wt % content GO, the copolymer nanocomposites did not attain the percolation threshold and displayed an insulative behavior like the pure copolymer. The presence of GO improved the ferroelectric properties of the copolymer films by increasing the remnant polarization from 47 (mC/m2) for pure copolymer to 57 (mC/m2) for the 0.3 wt % GO-copolymer.

Original languageEnglish (US)
Title of host publication28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013
Pages1000-1010
Number of pages11
StatePublished - Dec 1 2013
Event28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013 - State College, PA, United States
Duration: Sep 9 2013Sep 11 2013

Publication series

Name28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013
Volume2

Other

Other28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013
CountryUnited States
CityState College, PA
Period9/9/139/11/13

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Fingerprint Dive into the research topics of 'Effect of graphene oxide on the ferroelectric properties of P(VDF-TrFE) (56/44)'. Together they form a unique fingerprint.

  • Cite this

    Sigamani, N., Ounaies, Z., & Sodano, H. (2013). Effect of graphene oxide on the ferroelectric properties of P(VDF-TrFE) (56/44). In 28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013 (pp. 1000-1010). (28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013; Vol. 2).