High dielectric permittivity in semiconducting Pr0.6Ca0.4MnO3 filled polyvinylidene fluoride nanocomposites with low percolation threshold

2009 ◽  
Vol 95 (6) ◽  
pp. 062904 ◽  
Author(s):  
K. Devi Chandrasekhar ◽  
A. Venimadhav ◽  
A. K. Das
Keyword(s):  
Dielectric Permittivity ◽  
Percolation Threshold ◽  
Polyvinylidene Fluoride ◽  
High Dielectric Permittivity ◽  
High Dielectric

Low loss high dielectric permittivity of polyvinylidene fluoride and KxTiyNi1−x−yO (x=0.05, y=0.02) composites

2010 ◽  
Vol 107 (12) ◽  
pp. 124115 ◽  
Author(s):  
Debabrata Bhadra ◽  
A. Biswas ◽  
S. Sarkar ◽  
B. K. Chaudhuri ◽  
K. F. Tseng ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Polyvinylidene Fluoride ◽  
Low Loss ◽  
High Dielectric Permittivity ◽  
High Dielectric

Hierarchical interfaces induce high dielectric permittivity in nanocomposites containing TiO2@BaTiO3 nanofibers

Nanoscale ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 6701-6709 ◽  
Author(s):  
Xin Zhang ◽  
Weiwei Chen ◽  
Jianjun Wang ◽  
Yang Shen ◽  
Lin Gu ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Polymer Nanocomposites ◽  
Polyvinylidene Fluoride ◽  
Nanocomposite Films ◽  
High Dielectric Permittivity ◽  
High Dielectric

TiO2 nanofibers embedded with BaTiO3 nanoparticles are fused with polyvinylidene fluoride into nanocomposite films. The hierarchical interfaces in the nanofibers induce a three-fold enhancement in dielectric permittivity of the polymer nanocomposites.

High dielectric permittivity and low loss of polyvinylidene fluoride filled with carbon additives: Expanded graphite versus reduced graphene oxide

2018 ◽  
Vol 31 (7) ◽  
pp. 778-784
Author(s):  
Wei Deng ◽  
Weili Yu ◽  
Weiwei Cui ◽  
Huachao Guo ◽  
Yifan Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Dielectric Loss ◽  
Dielectric Permittivity ◽  
Reduced Graphene Oxide ◽  
Polyvinylidene Fluoride ◽  
Expanded Graphite ◽  
High Dielectric Permittivity ◽  
Reduced Graphene ◽  
Pvdf Matrix ◽  
High Dielectric

Polymer dielectric composites with high dielectric permittivity and low dielectric loss play an increasing important role for modern electronic and electric industry. In this study, polyvinylidene fluoride (PVDF) incorporated with expanded graphite (EG) or reduced graphene oxide (rGO) was prepared by solution casting and the following hot pressing. The structure, morphology, and properties of the obtained products were characterized. In comparison with EG, rGO exhibits well dispersion and strong interaction with PVDF matrix. With the increasing content of conductive fillers, the dielectric permittivity of both PVDF/EG and PVDF/rGO composites shows an increasing trend whereas the dielectric loss keeps at a low level. The dielectric permittivity of PVDF filled with 4 wt% EG and 8 wt% rGO reaches 420 and 38 at 100 Hz, respectively. Moreover, the introduction of EG and rGO improves the mechanical strength and the thermal stability of PVDF matrix.

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