Leveraging Shape Memory Coupled Piezoelectric Properties in Melt Extruded Composite Filament Based on Polyvinylidene Fluoride and Polyurethane

2020 ◽  
Vol 305 (12) ◽  
pp. 2000296
Author(s):  
Anupam Chowdhury ◽  
Satyaranjan Bairagi ◽  
Syed Wazed Ali ◽  
Bipin Kumar
Keyword(s):  
Shape Memory ◽  
Polyvinylidene Fluoride ◽  
Piezoelectric Properties ◽  
Composite Filament

Enhanced piezoelectric properties of polyvinylidene fluoride nanofibers using carbon nanofiber and electrical poling

2019 ◽  
Vol 255 ◽  
pp. 126515 ◽  
Author(s):  
R. Senthil Kumar ◽  
T. Sarathi ◽  
K.K. Venkataraman ◽  
Amitava Bhattacharyya
Keyword(s):  
Polyvinylidene Fluoride ◽  
Piezoelectric Properties ◽  
Carbon Nanofiber

scholarly journals Computer Aided Molecular Modeling of the Piezoelectric Properties of Ferroelectric Composites on the Base of Polyvinylidene Fluoride with Graphene and Graphene Oxide

2017 ◽  
Vol 12 (2) ◽  
pp. 466-486
Author(s):  
А.В. Быстрова ◽  
A.V. Bystrova
Keyword(s):  
Graphene Oxide ◽  
Molecular Modeling ◽  
Polyvinylidene Fluoride ◽  
Piezoelectric Coefficient ◽  
Vinylidene Fluoride ◽  
Piezoelectric Properties ◽  
A Value ◽  
Poly Vinylidene Fluoride ◽  
Pure Pvdf ◽  
Sandwich Model

Molecular modeling of ferroelectric composites containing polyvinylidene fluoride (PVDF), graphene (G) and/or graphene oxide (GO), was performed using the semi-empirical quantum approximation PM3 in the HyperChem software package. The piezoelectric properties of the composites were analyzed and compared with the experimental data obtained for thin films containing poly(vinylidene-fluoride-trifluoroethylene) with graphene oxide (P (VDF-TrFE)/GO). A qualitative agreement was obtained between the simulation results and the experimental measurements of the piezoelectric coefficient, its decrease in the presence of G or GO was revealed. When models containing one or more layers of graphene with 54 carbon atoms were investigated, it was found that the average piezoelectric coefficient was reduced to -9.8 pm/V for the one-sided PVDF/G model and to -18.98 pm/V for the two-sided sandwich model G/PVDF/G in compare with the calculated piezoelectric coefficient for pure PVDF (-42.2 pm/V). After computer modeling for models incorporating one or more layers of 96 carbon atoms in the oxide graphene, it was found that the piezoelectric coefficient was reduced to a value of -14.6 pm/V for a one-sided PVDF / GO model and to a value of -29.8 pm/V for a two-sided sandwich model GO/ PVDF/GO compared to the piezoelectric coefficient for pure PVDF.

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