Electrospun Poly(vinylidene fluoride-trifluoroethylene)-Based Polymer Nanocomposite Fibers for Piezoelectric Nanogenerators

2019 ◽  
Vol 11 (43) ◽  
pp. 40180-40188 ◽  
Author(s):  
Subash Cherumannil Karumuthil ◽  
Sreenidhi Prabha Rajeev ◽  
Uvais Valiyaneerilakkal ◽  
Sujith Athiyanathil ◽  
Soney Varghese
Keyword(s):  
Vinylidene Fluoride ◽  
Polymer Nanocomposite ◽  
Poly Vinylidene Fluoride ◽  
Nanocomposite Fibers ◽  
Piezoelectric Nanogenerators

scholarly journals Development of In-Situ Poled Nanofiber Based Flexible Piezoelectric Nanogenerators for Self-Powered Motion Monitoring

2020 ◽  
Vol 10 (10) ◽  
pp. 3493
Author(s):  
Minjung Kim ◽  
Vignesh Krishnamoorthi Kaliannagounder ◽  
Afeesh Rajan Unnithan ◽  
Chan Hee Park ◽  
Cheol Sang Kim ◽  
...  
Keyword(s):  
Vinylidene Fluoride ◽  
Implantable Devices ◽  
The Past ◽  
Β Phase ◽  
Poly Vinylidene Fluoride ◽  
High Bias ◽  
Self Powered ◽  
Increasing Demand ◽  
Piezoelectric Nanogenerators

Energy harvesting technologies have found significant importance over the past decades due to the increasing demand of energy and self-powered design of electronic and implantable devices. Herein, we demonstrate the design and application of in situ poled highly flexible piezoelectric poly vinylidene fluoride (PVDF) graphene oxide (GO) hybrid nanofibers in aligned mode for multifaceted applications from locomotion sensors to self-powered motion monitoring. Here we exploited the simplest and most versatile method, called electrospinning, to fabricate the in situ poled nanofibers by transforming non-polar α-phase of PVDF to polar β- phase structures for enhanced piezoelectricity under high bias voltage. The flexible piezoelectric device fabricated using the aligned mode generates an improved output voltage of 2.1 V at a uniform force of 12 N. The effective piezoelectric transduction exhibited by the proposed system was tested for its multiple efficacies as a locomotion detector, bio-e-skin, smart chairs and so on.

Improving the dielectric properties of poly(vinylidene fluoride) composites by using poly(vinyl pyrrolidone)-encapsulated polyaniline nanorods

2016 ◽  
Vol 4 (7) ◽  
pp. 1504-1510 ◽  
Author(s):  
Shuangmin Yu ◽  
Fan Qin ◽  
Gengchao Wang
Keyword(s):  
High Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Polymer Nanocomposite ◽  
Vinyl Pyrrolidone ◽  
Low Dielectric ◽  
Poly Vinylidene Fluoride ◽  
Poly Vinyl Pyrrolidone ◽  
High Dielectric ◽  
Polyaniline Nanorods ◽  
Dielectric Polymer

A promising PVDF-based dielectric polymer nanocomposite based on easily dispersed and poly(vinyl pyrrolidone)-encapsulated polyaniline nanorods (dPANI@PVP) was fabricated and displayed a high dielectric constant and low dielectric loss.

Fabrication and Characterization of CoFe2O4-Polymer Nanocomposite Thin-Films

2013 ◽  
Vol 1507 ◽  
Author(s):  
Xiaohua Liu ◽  
Shuangyi Liu ◽  
Stephen O’Brien
Keyword(s):  
Thin Films ◽  
Magnetic Particles ◽  
Cobalt Ferrite ◽  
Vinylidene Fluoride ◽  
Structural Information ◽  
Effective Permittivity ◽  
Polymer Nanocomposite ◽  
Magnetic Devices ◽  
Nanocomposite Thin Films ◽  
Poly Vinylidene Fluoride

ABSTRACTMagnetic cobalt ferrite nanoparticles provide a pathway towards nanocomposites, due to the ability to fabricate particle-matrix thin films in the submicron range. In this work flexible particulate 0-3 type thin-films, composed of magnetic CoFe2O4 particles (8-18 nm) and ferroelectric poly(vinylidene fluoride-co-hexafluoropropene) (P(VDF-HFP)) polymer, have been fabricated via multiple spin-coating. The thickness of the thin-films was controlled in the range of 500 nm to 1.2 μm, with magnetic particles dispersively embedded in the polymer matrix. Structural information was analyzed by TEM, XRD, HRTEM and SEM. The dielectric and magnetic properties of the cobalt ferrite/copolymer thin films are systematically investigated. The nanocomposite thin films exhibit composition-dependent effective permittivity and loss tangent, as well as temperature and composition-dependent specific saturation magnetization (Ms). The coercivity (Hc) was not affected by the composite’s composition. These films have great potential in smart magnetic devices and biomagnetic applications.

Exploring the Structural and Dielectric Properties of Polymer Films Incorporating Carbon-Based Nanomaterials

2021 ◽  
Vol 20 (02) ◽  
pp. 2150019
Author(s):  
A. Deepak ◽  
Pheba Cherian ◽  
D. F. L. Jenkins
Keyword(s):  
Vinylidene Fluoride ◽  
Tunneling Current ◽  
Polymer Nanocomposite ◽  
Wide Frequency Range ◽  
Nanocomposite Films ◽  
Host Matrix ◽  
Weight Percentage ◽  
Poly Vinylidene Fluoride ◽  
Electrical Permittivity ◽  
Carbon Based Nanomaterials

This work explores the electrical, dielectric and physical characteristics of multi-walled carbon nanotube (MWCNT) and graphene reinforced Poly vinylidene fluoride (PVDF) polymer nanocomposite films, over a wide frequency range, ranging from 1 Hz to 1 MHz. Films are prepared with different weight percentage of MWCNTs or graphene powder within a PVDF host matrix and its intrinsic properties are compared with pure PVDF films. As the weight percentage increases, the material properties such as conductivity (electrical), permittivity (dielectric) and capacitance (dielectric) will change. PVDF is a dielectric and the fillers are conductors, and this gives rise to the phenomenon of percolation, as the weight percentage of conducting fillers increases. This paper explores film’s properties for different weight percentage of MWCNTs and graphene fillers. Tunneling current of graphene–PVDF films are also compared with MWCNT–PVDF films.

Preparation and characterization of poly(vinylidene fluoride-trifluoroethylene)/barium titanate polymer nanocomposite for ferroelectric applications

2015 ◽  
Vol 38 (8) ◽  
pp. 1655-1661 ◽  
Author(s):  
Uvais Valiyaneerilakkal ◽  
Amit Singh ◽  
C.K. Subash ◽  
Kulwant Singh ◽  
S.M. Abbas ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Vinylidene Fluoride ◽  
Polymer Nanocomposite ◽  
Poly Vinylidene Fluoride
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