High dielectric poly(vinylidene fluoride) nanocomposite films with MoS2 using polyaniline interlinker via interfacial interaction

2017 ◽  
Vol 5 (46) ◽  
pp. 12121-12133 ◽  
Author(s):  
Nirmal Maity ◽  
Amit Mandal ◽  
Arun K. Nandi
Keyword(s):  
Dielectric Constant ◽  
Molybdenum Disulfide ◽  
Vinylidene Fluoride ◽  
Interfacial Interaction ◽  
Nanocomposite Films ◽  
Good Dispersion ◽  
Β Phase ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric

Aniline in situ polymerized within exfoliated molybdenum disulfide produces MoS2–PANI with raspberry morphology, showing good dispersion into poly(vinylidene fluoride)(PVDF) and produces 86% β-phase PVDF yielding dielectric constant 586 at 102 Hz.

Improving the thermal stability, electroactive β phase crystallization and dielectric constant of NiO nanoparticle/C–NiO nanocomposite embedded flexible poly(vinylidene fluoride) thin films

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 26288-26299 ◽  
Author(s):  
Pradip Thakur ◽  
Arpan Kool ◽  
Nur Amin Hoque ◽  
Biswajoy Bagchi ◽  
Swagata Roy ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Stability ◽  
Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Β Phase ◽  
Poly Vinylidene Fluoride ◽  
Phase Nucleation ◽  
Nio Nps ◽  
High Dielectric

Increasing β phase nucleation and formation of microcapacitors in flexible high dielectric NiO NPs/C–NiO NCs modified PVDF films.

High dielectric constant and low dielectric loss poly(vinylidene fluoride) nanocomposites via a small loading of two-dimensional Bi2Te3@Al2O3 hexagonal nanoplates

2018 ◽  
Vol 6 (2) ◽  
pp. 271-279 ◽  
Author(s):  
Jianwen Chen ◽  
Xiucai Wang ◽  
Xinmei Yu ◽  
Lingmin Yao ◽  
Zhikui Duan ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
High Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Nanocomposite Films ◽  
Two Dimensional ◽  
Low Dielectric ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric ◽  
Hexagonal Nanoplates

Nanocomposite films with a small loading of two-dimensional Bi2Te3@Al2O3 hexagonal nanoplates exhibit a high dielectric constant of 140 and relatively low dielectric loss of 0.05 at 1 kHz.

PVDF promotes TiO2 dispersion to obtain composite films with high dielectric constant and low loss

2021 ◽  
pp. 095400832110440
Author(s):  
Mingyun Peng ◽  
Ke Li ◽  
Bingliang Huang ◽  
Jie Cheng
Keyword(s):  
Dielectric Constant ◽  
Room Temperature ◽  
Vinylidene Fluoride ◽  
In Situ Polymerization ◽  
Composite Films ◽  
Low Loss ◽  
Three Phase ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric

A series of three-phase composite films with different filler contents were prepared by in-situ polymerization. The composite films comprise polyimide (PI), poly (vinylidene fluoride) (PVDF), and titanium dioxide (TiO2). Compared with PI/TiO2 composite films, the PI/TiO2-PVDF composite films not only get a significant increase in dielectric constant, but also own better mechanical properties. Our results show that with the loading of 50wt% PVDF particles, the dielectric constant of PI/TiO2-PVDF composite films increased from 6.5 to 18.14 at 1 MHz and room temperature, while the tensile strength of PI/TiO2-PVDF composite films increased from 45 to 72 MPa. In addition, the films maintain a low loss tangent of about 0.02. PI/PVDF composite films were also prepared. It was found that dielectric constant of PI/PVDF composite was significantly lower than that of PI/TiO2-PVDF composite films when the loading of PVDF is 50wt%.

Development of self-poled PVDF/MWNT flexible nanocomposites with a boosted electroactive β-phase

2020 ◽  
Vol 44 (34) ◽  
pp. 14578-14591
Author(s):  
Akash M. Chandran ◽  
S. Varun ◽  
Prasanna Kumar S. Mural
Keyword(s):  
Vinylidene Fluoride ◽  
Piezoelectric Properties ◽  
Nanocomposite Films ◽  
Fabrication Method ◽  
Β Phase ◽  
Poly Vinylidene Fluoride ◽  
Dielectric And Piezoelectric Properties

In the present study, we report a simple fabrication method for poly(vinylidene fluoride) PVDF/MWCNT flexible nanocomposite films with a boosted electroactive phase that enhanced the dielectric and piezoelectric properties.

Enhancement of electroactive β phase crystallization and dielectric constant of PVDF by incorporating GeO2 and SiO2 nanoparticles

2015 ◽  
Vol 17 (35) ◽  
pp. 22784-22798 ◽  
Author(s):  
Epsita Kar ◽  
Navonil Bose ◽  
Sukhen Das ◽  
Nillohit Mukherjee ◽  
Sampad Mukherjee
Keyword(s):  
Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Sio2 Nanoparticles ◽  
Β Phase ◽  
Poly Vinylidene Fluoride

Poly(vinylidene fluoride) (PVDF) nanocomposites are recently gaining importance due to their unique dielectric and electroactive responses.

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.

Preparation, Morphology and Dielectric Properties of Polyamide-6/Poly(Vinylidene Fluoride) Blends

2012 ◽  
Vol 496 ◽  
pp. 263-267
Author(s):  
Rui Li ◽  
Jian Zhong Pei ◽  
Yan Wei Li ◽  
Xin Shi ◽  
Qun Le Du
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Flexible Electronics ◽  
High Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Volume Fraction ◽  
Polyamide 6 ◽  
Dielectric Constants ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric

A novel all-polymeric material with high dielectric constant (k) has been developed by blending poly (vinylidene fluoride) (PVDF) with polyamide-6 (PA6). The dependence of the dielectric properties on frequency and polymer volume fraction was investigated. When the volume fraction of PA6 is 20%, the dielectric property is better than others. The SEM investigations suggest that the enhanced dielectric behavior originates from significant interfacial interactions of polymer-polymer. The XRD demonstrate that the PA6 and PVDF affect the crystalline behavior of each component. Furthermore, the stable dielectric constants of the blends could be tuned by adjusting the content of the polymers. The created high-k all-polymeric blends represent a novel type of material that are simple technology and easy to process, and is of relatively high dielectric constant, applications as flexible electronics.

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