Enhanced dielectric and ferroelectric properties induced by dopamine-modified BaTiO3 nanofibers in flexible poly(vinylidene fluoride-trifluoroethylene) nanocomposites
Authors:
Top Cited Papers
- 21 February 2012
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 22 (16) , 8063-8068
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.Keywords
This publication has 30 references indexed in Scilit:
- Improving Dielectric Properties of BaTiO3/Ferroelectric Polymer Composites by Employing Surface Hydroxylated BaTiO3 NanoparticlesACS Applied Materials & Interfaces, 2011
- High–rate electrochemical capacitors from highly graphitic carbon–tipped manganese oxide/mesoporous carbon/manganese oxide hybrid nanowiresEnergy & Environmental Science, 2011
- Nanocomposites with increased energy density through high aspect ratio PZT nanowiresNanotechnology, 2010
- Physical Properties of Composites Near PercolationAnnual Review of Materials Research, 2010
- The preparation and ferroelectric properties of defect-free ultrathin films of vinylidene fluoride oligomerJournal of Applied Physics, 2010
- High Tc in Electrospun BaTiO3 NanofibersJournal of the American Ceramic Society, 2009
- Enhancement of dielectric constant and piezoelectric coefficient of ceramic–polymer composites by interface chelationJournal of Materials Chemistry, 2009
- Mussel-Inspired Surface Chemistry for Multifunctional CoatingsScience, 2007
- Synthesis of barium titanate (BaTiO3) nanofibers via electrospinningMaterials Letters, 2005
- Dielectric nanocomposites with insulating propertiesIEEE Transactions on Dielectrics and Electrical Insulation, 2005