Significantly enhanced low-frequency dielectric permittivity in the BaTiO3/poly(vinylidene fluoride) nanocomposite

2007 ◽  
Vol 90 (1) ◽  
pp. 012901 ◽  
Author(s):  
Zhi-Min Dang ◽  
Hai-Ping Xu ◽  
Hai-Yan Wang
Keyword(s):  
Dielectric Permittivity ◽  
Vinylidene Fluoride ◽  
Low Frequency ◽  
Poly Vinylidene Fluoride

Study of dielectric behavior in PVDF/clay nanocomposites

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
C.V. Chanmal ◽  
J.P. Jog
Keyword(s):  
Dielectric Permittivity ◽  
Vinylidene Fluoride ◽  
Low Frequency ◽  
Interfacial Polarization ◽  
Dielectric Behavior ◽  
Clay Nanocomposites ◽  
Cole Plot ◽  
Β Phase ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric

AbstractA high dielectric permittivity nanocomposite based on poly(vinylidene fluoride) (PVDF) and organically modified clay is reported. The present work aims to study the effect of clay on dielectric behavior of PVDF. The dielectric permittivity study shows a remarkable enhancement in the permittivity of nanocomposites in the low frequency region. The obtained permittivity values fits quite well to the prediction of dielectric permittivity from Vo-Shi model, which takes contribution of interface to permittivity into account. This enhanced permittivity in nanocomposites is attributed to the presence of interfacial polarization. The interface effect is further studied with cole-cole plot analysis. The dielectric loss study of pristine PVDF shows two relaxations associated with segmental (glass transition relaxation) and crystalline chain relaxation. However in the PVDF/Clay nanocomposites crystalline relaxation peak disappears which is attributed to the formation of the β phase in PVDF/clay nanocomposites.

scholarly journals Crystallinity, morphology and high dielectric permittivity of NiO nanosheets filling Poly(vinylidene fluoride)

2015 ◽  
Vol 41 (10) ◽  
pp. 14733-14739 ◽  
Author(s):  
Rafael A.C. Amoresi ◽  
Anderson A. Felix ◽  
Eriton R. Botero ◽  
Nelson L.C. Domingues ◽  
Evaristo A. Falcão ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Vinylidene Fluoride ◽  
High Dielectric Permittivity ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric ◽  
Nio Nanosheets
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