Issue 16, 2012
From the journal:

Journal of Materials Chemistry

Enhanced dielectric and ferroelectric properties induced by dopamine-modified BaTiO3 nanofibers in flexible poly(vinylidene fluoride-trifluoroethylene) nanocomposites

Yu Song,a   Yang Shen,*a   Haiyang Liu,a   Yuanhua Lin,a   Ming Lia  and  Ce-Wen Nan*a  

* Corresponding authors

a Department of Materials Science and Engineering, State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing, China
E-mail: cwnan@tsinghua.edu.cn, shyang_mse@ tsinghua.edu.cn
Fax: +86-10-62771160
Tel: +86-10-62773300

Abstract

BaTiO3 nanofibers with a large aspect ratio prepared via electrospinning and modified by dopamine were used as dielectric fillers in poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE)-based nanocomposites. Highly flexible polymer nanocomposite films were fabricated via a simple solution-cast method. Enhanced dielectric permittivities were obtained at a low volume fraction of BaTiO3 nanofibers. The breakdown strength of the polymer nanocomposites was also improved, which is favorable for enhanced ferroelectric properties in the nanocomposites. Pr ∼9.1 μC cm−2 was achieved in the nanocomposites with 10.8 vol% BaTiO3 nanofibers. The improved breakdown strength and enhanced ferroelectric properties are attributed to the combined effect of the surface modification by dopamine, the large aspect ratio of the BaTiO3 nanofibers and the improved crystallinity of the polymer nanocomposites induced by the BaTiO3 nanofibers.

Graphical abstract: Enhanced dielectric and ferroelectric properties induced by dopamine-modified BaTiO3 nanofibers in flexible poly(vinylidene fluoride-trifluoroethylene) nanocomposites

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Article information

DOI
https://doi.org/10.1039/C2JM30297G
Article type
Paper
Submitted
16 Jan 2012
Accepted
21 Feb 2012
First published
21 Feb 2012

J. Mater. Chem., 2012,22, 8063-8068

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Enhanced dielectric and ferroelectric properties induced by dopamine-modified BaTiO3 nanofibers in flexible poly(vinylidene fluoride-trifluoroethylene) nanocomposites

Y. Song, Y. Shen, H. Liu, Y. Lin, M. Li and C. Nan, J. Mater. Chem., 2012, 22, 8063 DOI: 10.1039/C2JM30297G

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