Behaviour of the Ferroelectric Phase Transition of P(VDF/TrFE) (75/25) with Increasing Deformation

Abstract

Samples of P(VDF-TrFE) 75/25 with several permanent deformations along the two main directions of the material were investigated by means infrared spectroscopy and calorimetric methods. The evolution of the phase transition temperature and the ferroelectric anomaly with increasing deformation was monitored and correlated with the structural changes occurring in the material.

Keywords:

• Ferroelectrics
• polymers
• FTIR
• DSC

Acknowledgements

The authors thank Luis Vieira helping with the FTIR measurements. Work supported by the Portuguese FCT under Grant POCTI/CTM/33501/99.