Development of polar phases in ferroelectric poly(vinylidene fluoride) (PVDF) nanoparticles

Ferroelectric polymer nanoparticles of poly(vinylidene fluoride) (PVDF) were prepared by dialysis nanoprecipitation. Particles with mean diameter of 230 nm show piezoelectric response as observed by Piezoresponse Force Microscopy (PFM). The origin of this ferroelectric behavior has been attributed t...

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Bibliographic Details
Authors: Gutiérrez Fernández, Edgar, Sena Fernández, Jose, Rebollar González, Esther, Ezquerra Sanz, Tiberio A., Hermoso Pinilla, Francisco J., Sanz Monasterio, Mikel, Gálvez González, Óscar, Nogales, Aurora
Format: article
Publication Date:2023
Country:España
Institution:Universidad Nacional de Educación a Distancia
Repository:e-spacio. Repositorio Institucional de la UNED
Language:English
OAI Identifier:oai:e-spacio.uned.es:20.500.14468/25103
Online Access:https://hdl.handle.net/20.500.14468/25103
Access Level:Open access
Keyword:23 Química::2307 Química física
Ferroelectric polymer nanoparticles
Polar phase
PVDF
Description
Summary:Ferroelectric polymer nanoparticles of poly(vinylidene fluoride) (PVDF) were prepared by dialysis nanoprecipitation. Particles with mean diameter of 230 nm show piezoelectric response as observed by Piezoresponse Force Microscopy (PFM). The origin of this ferroelectric behavior has been attributed to the presence of ferroelectrically active crystalline phases of PVDF in the nanoparticles (mainly β and γ phases) as demonstrated by differential scanning calorimetry (DSC) and temperature dependent Fourier transform infrared spectroscopy (FTIR) and X ray diffraction. The combination of the preparation method and temperature treatment can provide a method for tuning the ferroelectricity in PVDF homopolymer nanoparticles.

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