Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-27T02:33:03.131Z Has data issue: false hasContentIssue false
  • English
  • Français

Ferroelectric and Piezoelectric Properties of Blends of Poly(Vinylidene Fluoride Trifluoroethylene) and a Graft Elastomer

Published online by Cambridge University Press:  10 February 2011

J. Su ,
Z. Ounaies  and
J. S. Harrison
J. Su
Affiliation:
National Research Council, NASA-LaRC, Hampton, VA 23681, USA
Z. Ounaies
Affiliation:
ICASE, NASA-Langley Research Center, Hampton, VA 23681, USA
J. S. Harrison
Affiliation:
NASA-Langley Research Center, Hampton, VA 23681, USA
Get access

Abstract

A piezoelectric polymeric blend system has been developed. The system contains two components: ferroelectric poly(vinylidene fluoride-trifluoroethylene) and graft elastomer. The remanent polarization, Pr, and the piezoelectric strain coefficient, d31, of the blends have been studied as a function of relative composition of the two components, temperature and frequency. Both blended copolymer and graft unit in the elastomer contribute to the total crystallinity of the blend-system, and hence to the remanent polarization and piezoelectricity. The piezoelectric strain coefficient, d31, of the blend systems shows dependence on both the remanent polarization and the mechanical stiffness, which in turn are determined by the fraction of the two components in the blends. This mechanism makes it possible for the piezoelectric strain response of the blend to be tailored by adjusting the relative composition. Although Pr of the copolymer is higher than that of the blends, the blend films containing 75 wt.% copolymer exhibit a higher d31 at room temperature, possibly due to their lower modulus. The blend films containing 50 wt.% copolymer exhibit a constant value of d31, from room temperature to 70°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 600: Symposium FF – Electroactive Polymers , 1999 , 95
Copyright
Copyright © Materials Research Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Higashihata, Y., Sako, J., and Yagi, T., Ferroelectrics, 32, 85 (1981).Google Scholar
2. Lovinger, A. J., Science, 20, 1115 (1983).Google Scholar
3. Furukawa, T., Phase Transition, 18, 143 (1989).Google Scholar
4. Wang, T. T., Herbert, J. M., and Glass, A. M., "Applications of Ferroelectric Polymers", Blakie, Glasgow (1988).Google Scholar
5. Zhang, Q. M., Bharti, V., and Zhao, X., Science, 280, 2101 (1998).Google Scholar
6. Bharti, V., Zhao, X., Zhang, Q. M., Romotawski, T., Tito, F., and Ting, R., Mat. Res. Innovat., 2, 57 (1998).Google Scholar
7. Dickens, B., Balizer, E., DeReggi, A. S., and Roth, S. C., J Appl. Phys., 72, 4258 (1992).Google Scholar
8. Davis, G. T., Furukawa, T., Lovinger, A. J., and Broadhurst, M. G., Macromolecules, 15, 329 (1982).Google Scholar