abstract
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.
keywords
FILMS
subject category
Materials Science; Physics
authors
Nunes, JS; Wu, A; Gomes, J; Sencadas, V; Vilarinho, PM; Lanceros-Mendez, S
our authors
Paula Maria Lousada Silveirinha Vilarinho
Vice DirectorProjects
Processing and characterization of electroactive polymers and composites based on PVDF for microelectronic, sensor and actuator applications (POCI/CTM/59425/2004)
Multiferroic, magnetoelectric and metallic micro and nanocomposites base don electroactive polymers (PTDC/CTM/69316/2006)
acknowledgements
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).