Simply preparation of self-poled PVDF/nanoceria nanocomposite through one-step formation approach

Abstract

In this article, we developed fully flexible PVDF/CeO2 nanocomposite was prepared by in situ formation of CeO2 nanoparticles confined within PVDF matrix, the films prepared using the facile casting technique. UV–visible spectra confirmed the formation of CeO2 NPs within the matrix. It is remarkable to indicate that the presence of nanoceria dramatically transform ~ 96% of the nonpolar phase of PVDF to the electroactive phase as elucidated from FTIR and XRD. The homogenously distributed CeO2 NPs enveloped into the PVDF matrix as represented by the cross section-SEM image, act as nucleating centers increasing the number of nucleation points, resulting therefore in smaller spherulites. This result can be assigned to the presence of interfacial interaction between negatively charged –CF2 dipoles of PVDF with positively charged CeO2 NPs (+ 8 mV) as revealed from the zeta measurement. The thermal analysis presented that the confined CeO2 NPs improve the thermal stability of PVDF polymer.