Dielectric Behavior of Lithium Tantalate (LiTaO3)/Poly(vinylidene fluoride) (PVDF) Nanocomposites Doped with MWCNTs

2017 ◽  
Vol 9 (3) ◽  
pp. 204-208
Author(s):  
Padmaja Guggilla ◽  
Courtney Walker ◽  
Matthew Edwards ◽  
Ashwith Chilvery ◽  
Brian Thomas
Keyword(s):  
Vinylidene Fluoride ◽  
Lithium Tantalate ◽  
Dielectric Behavior ◽  
Poly Vinylidene Fluoride

Enhancement of β phase crystallization and dielectric behavior of kaolinite/halloysite modified poly(vinylidene fluoride) thin films

2014 ◽  
Vol 99 ◽  
pp. 149-159 ◽  
Author(s):  
Pradip Thakur ◽  
Arpan Kool ◽  
Biswajoy Bagchi ◽  
Sukhen Das ◽  
Papiya Nandy
Keyword(s):  
Thin Films ◽  
Vinylidene Fluoride ◽  
Dielectric Behavior ◽  
Β Phase ◽  
Poly Vinylidene Fluoride

Nanofibers of poly(vinylidene fluoride)/copper nanowire: Microstructural analysis and dielectric behavior

2018 ◽  
Vol 101 ◽  
pp. 46-55 ◽  
Author(s):  
João Paulo Ferreira Santos ◽  
Aline Bruna da Silva ◽  
Mohammad Arjmand ◽  
Uttandaraman Sundararaj ◽  
Rosario Elida Suman Bretas
Keyword(s):  
Vinylidene Fluoride ◽  
Microstructural Analysis ◽  
Dielectric Behavior ◽  
Copper Nanowire ◽  
Poly Vinylidene Fluoride

Electrical Permittivity of Polyvinylidene Fluoride Nanocomposites Filled with Organoclay and Graphite Nanoplatelets: Compared and Contrasted

2011 ◽  
Vol 495 ◽  
pp. 5-8 ◽  
Author(s):  
Sie Chin Tjong
Keyword(s):  
Polyvinylidene Fluoride ◽  
Vinylidene Fluoride ◽  
Compression Molding ◽  
Dielectric Behavior ◽  
Clay Nanocomposites ◽  
Graphite Nanoplatelets ◽  
Poly Vinylidene Fluoride ◽  
The Matrix ◽  
Electrical Permittivity

Poly (vinylidene fluoride)/graphite nanoplatelets (PVDF/GNP) and PVDF/clay nanocomposites were prepared by means of solution mixing and compression molding processes. The effects of graphite and clay nanoplatelet additions on dielectric behavior of PVDF were studied. The results showed that both clay and GNP additions were beneficial in enhancing permittivity of PVDF. However, conducting graphite platelets were more effective than nonconducting clay sheets in this aspect. This was due to the formation of mini-capacitors in the matrix of PVDF/GNP nanocomposites.

scholarly journals Electroactive γ-Phase, Enhanced Thermal and Mechanical Properties and High Ionic Conductivity Response of Poly (Vinylidene Fluoride)/Cellulose Nanocrystal Hybrid Nanocomposites

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 743
Author(s):  
Erlantz Lizundia ◽  
Ander Reizabal ◽  
Carlos M. Costa ◽  
Alberto Maceiras ◽  
Senentxu Lanceros-Méndez
Keyword(s):  
Ionic Conductivity ◽  
Vinylidene Fluoride ◽  
Mechanical Performance ◽  
Dielectric Behavior ◽  
Hybrid Nanocomposites ◽  
Thermal And Mechanical Properties ◽  
Oh Groups ◽  
Poly Vinylidene Fluoride ◽  
Relevant Role

Cellulose nanocrystals (CNCs) were incorporated into poly (vinylidene fluoride) (PVDF) to tailor the mechanical and dielectric properties of this electroactive polymer. PVDF/CNC nanocomposites with concentrations up to 15 wt.% were prepared by solvent-casting followed by quick vacuum drying in order to ensure the formation of the electroactive γ-phase. The changes induced by the presence of CNCs on the morphology of PVDF and its crystalline structure, thermal properties, mechanical performance and dielectric behavior are explored. The results suggest a relevant role of the CNC surface −OH groups, which interact with PVDF fluorine atoms. The real dielectric constant ε’ of nanocomposites at 200 Hz was found to increase by 3.6 times up to 47 for the 15 wt.% CNC nanocomposite due to an enhanced ionic conductivity provided by CNCs. The approach reported here in order to boost the formation of the γ-phase of PVDF upon the incorporation of CNCs serves to further develop cellulose-based multifunctional materials.

Dielectric Properties of Graphite Nanosheets Doped Poly(vinylidene Fluoride)/Silicon Carbide Hybrid

2011 ◽  
Vol 279 ◽  
pp. 3-9
Author(s):  
Yu Сhao Li ◽  
Xiang Сai Ge ◽  
Sie Chin Tjong
Keyword(s):  
Silicon Carbide ◽  
Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Wide Frequency Range ◽  
Dielectric Behavior ◽  
Frequency Range ◽  
Molding Process ◽  
Graphite Nanosheets ◽  
Poly Vinylidene Fluoride ◽  
Sic Composites

Binary poly(vinylidene fluoride)/silicon carbide (PVDF/SiC) composites and its graphite nanosheets (GN) doped ternary hybrids were fabricated using simple solution mixing and hot compression molding process. The dielectric behavior of such hybrids was studied over a wide frequency range. Additions of graphite nanosheets with their concentrations close to the percolation threshold were found to be very effective to enhance the dielectric permittivity of PVDF/SiC system. The dielectric constant for PVDF/SiC/GN 80/20/2 system was ~ 200, being twenty times higher than that of neat PVDF. Furthermore, the dielectric behavior of such hybrid displayed strong frequency dependence.

scholarly journals Tuning the dielectric behavior of poly(vinylidene fluoride-co-vinyl alcohol) using a facile urethane-based crosslinking method

2019 ◽  
Vol 10 (11) ◽  
pp. 1335-1343 ◽  
Author(s):  
Niels L. Meereboer ◽  
Ivan Terzić ◽  
Katja Loos
Keyword(s):  
Hysteresis Loop ◽  
Vinyl Alcohol ◽  
Vinylidene Fluoride ◽  
Crosslinking Density ◽  
Dielectric Behavior ◽  
Poly Vinylidene Fluoride ◽  
Double Hysteresis Loop

Crosslinking poly(VDF-co-VA) copolymers leads to a change from ferroelectric to double hysteresis loop behavior when the crosslinking density is increased.

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