Relationship between the microstructure and the microscopic piezoelectric response of the alpha- and beta-phases of poly(vinylidene fluoride)


The piezoelectric and pyroelectric properties of PVDF mainly depend on its beta-phase. This work reports the study by scanning force microscopy in a piezoresponse mode of the variations in the topological morphology and piezoelectric surface response of beta-PVDF prepared by the main preparation methods of this phase. Clear differences in the poled region distribution and size, as well as in the local piezoactivity, have been identified. The piezoelectric activity at a mesoscale reflects the semicrystalline phase of the polymer.




Materials Science; Physics


Nunes, JS; Wu, A; Gomes, J; Sencadas, V; Vilarinho, PM; Lanceros-Mendez, S

nossos autores


The authors thank the Portuguese Foundation for Science and Technology (FCT-Grant POCI/CTM/59425/2004, PTDC/CTM/69316/2006 and INL project 156: SIMBIO) for financial support. V. Sencadas also thanks the FCT for the Ph.D. Grant (SFRH/BD/16543/2004).

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