Preparation and properties of polyvinylidene fluoride/tetra-needle like-zinc oxide whisker composites

2017 ◽  
Vol 37 (6) ◽  
pp. 1658-1664 ◽  
Author(s):  
Ling Weng ◽  
Peihai Ju ◽  
Xiaorui Zhang ◽  
Lizhu Liu
Keyword(s):  
Zinc Oxide ◽  
Polyvinylidene Fluoride ◽  
Oxide Whisker

scholarly journals Piezoelectric Properties of Zinc Oxide/Iron Oxide filled Polyvinylidene fluoride Nanocomposite Fibers

2021 ◽  
Author(s):  
Abdulrahman Mohmmed AlAhzm ◽  
Maan Omar Alejli ◽  
Deepalekshmi Ponnamma ◽  
Yara Elgawady ◽  
Mariam Al Ali Al-Maadeed
Keyword(s):  
Zinc Oxide ◽  
Iron Oxide ◽  
Polyvinylidene Fluoride ◽  
Output Voltage ◽  
Mechanical Energy ◽  
Scanning Calorimetry ◽  
Power Sources ◽  
Hybrid Nanomaterial ◽  
Β Phase ◽  
Nanocomposite Fibers

Abstract Piezoelectric nanogenerators (PENG) with flexible and simple design have pronounced significance in fabricating sustainable devices for self-powering electronics. This study demonstrates the fabrication of electrospun nanocomposite fibers from polyvinylidene fluoride (PVDF) filled Zinc Oxide (ZnO)/Iron Oxide (FeO) nanomaterials. The nanocomposite fiber based flexible PENG showed piezoelectric output voltage of 5.9 V when 3 wt.% of ZnO/FeO hybrid nanomaterial was introduced, which was 29.5 times higher than the neat PVDF. No apparent decline in output voltage was observed for almost 2000 seconds attributed to the outstanding durability. This higher piezoelectric output performance is correlated with the β-phase transformation studies from the Fourier transformation infrared spectroscopy and the crystallinity studies from the differential scanning calorimetry. Both these studies show respective enhancement of 3.79 and 2.16 % in the β-phase crystallinity values of PVDF-ZnO/FeO 3 wt.% composite. Higher dielectric constant value obtained for the same composite (3 times higher than the neat PVDF) confirms the increased energy storage efficiency as well. Thus the proposed soft and flexible PENG is a promising mechanical energy harvester, and its good dielectric properties reveals the ability to use this material as good power sources for wearable and flexible electronic devices.

Calculation of effective electromagnetic parameters of multi-needle zinc oxide whisker based on equivalent spherical particle and strong fluctuation theory

2014 ◽  
Vol 116 (23) ◽  
pp. 233507 ◽  
Author(s):  
Yu-Chen Zhao ◽  
Jiang-Fan Liu ◽  
Zhong-Guo Song ◽  
Xiao-Li Xi
Keyword(s):  
Zinc Oxide ◽  
Spherical Particle ◽  
Fluctuation Theory ◽  
Electromagnetic Parameters ◽  
Strong Fluctuation ◽  
Oxide Whisker

Mechanical properties and morphology of nylon 11/tetrapod-shaped zinc oxide whisker composite

2009 ◽  
Vol 504 (1-2) ◽  
pp. 8-12 ◽  
Author(s):  
Guosheng Hu ◽  
Yalin Ma ◽  
Biaobing Wang
Keyword(s):  
Mechanical Properties ◽  
Zinc Oxide ◽  
Oxide Whisker ◽  
Nylon 11

scholarly journals Preparation and Characterization of Matrix Hybrid Membranes Polyvinylidene Fluoride/Polyvinylpyrrolidone/Silica Gel/Zinc Oxide for Cr(VI) Removal from Water

2020 ◽  
Vol 44 (5) ◽  
pp. 311-318
Author(s):  
Mustapha Chabane ◽  
Chikh Melkaoui ◽  
Benamar Dahmani ◽  
Sihem Zahia Belalia
Keyword(s):  
Zinc Oxide ◽  
Silica Gel ◽  
Water Permeability ◽  
Polyvinylidene Fluoride ◽  
Membrane Filtration ◽  
Weight Ratio ◽  
Rejection Rate ◽  
Precipitation Method ◽  
Hybrid Membranes

Matrix hybrid membranes, based on polyvinylidene fluoride (PVDF), poly (N-vinylpyrrolidone) (PVP), silica gel (SG) and zinc oxide (ZnO) were synthesized by phase inversion via immersion precipitation method. The characterization of membrane samples was performed using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), optical microscopy, contact angle, porosity, mean pore size and water permeability measurements. The FTIR analysis showed the appearance of new bands attributed to the functional groups of SG and ZnO. The XRD analysis confirmed a modification in the structure of membranes. The prepared membranes were used for the removal of hexavalent chromium (Cr(VI)) from aqueous solution. Membrane filtration experiments show that the water permeability and Cr(VI) rejection ratios increase with increasing the weight ratio ZnO (%)/SG (%). The maximum values of the Cr(VI) rejection rate and water permeability were respectively 85% and 685 L/m2hbar for weight ratios (0.75% of ZnO/0.25% of SG).

Influence of tetrapod-shaped zinc oxide whisker on poly(vinylidene fluoride) based gel polymer electrolyte

2003 ◽  
Vol 38 (8) ◽  
pp. 1449-1455 ◽  
Author(s):  
Biaobing Wang ◽  
Zuowan Zhou ◽  
Lixia Gu
Keyword(s):  
Zinc Oxide ◽  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Gel Polymer Electrolyte ◽  
Poly Vinylidene Fluoride ◽  
Oxide Whisker

Tetrapod-like Zinc Oxide Whisker Enhancement of Resin Composite

2010 ◽  
Vol 89 (7) ◽  
pp. 746-750 ◽  
Author(s):  
L.N. Niu ◽  
M. Fang ◽  
K. Jiao ◽  
L.H. Tang ◽  
Y.H. Xiao ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Resin Composite ◽  
Oxide Whisker

scholarly journals POLYVINYLIDENE FLUORIDE AND ZINC OXIDE SMART COMPOSITE MATERIAL

2012 ◽  
pp. 22-27
Author(s):  
S.S. SAWALE ◽  
P.S. SAWALE
Keyword(s):  
Zinc Oxide ◽  
Composite Material ◽  
Polymer Solution ◽  
Polyvinylidene Fluoride ◽  
Ceramic Materials ◽  
Material System ◽  
Free Standing ◽  
Composite Pellets ◽  
Alternative Processes ◽  
Electromechanical Characterization

This work aimed at fabrication and electromechanical characterization of a smart material system composed of electroactive polymer and ceramic materials. The idea of composite material system is on account of complementary characteristics of the polymer and ceramic for flexibility and piezoelectric activity. Our preliminary work included Polyvinylidene Fluoride (PVDF) as the flexible piezoelectric polymer, and Zinc Oxide (ZnO) as the piezoelectric ceramic brittle, but capable to respond strains without poling. Two alternative processes were investigated. The first process makes use of ZnO fibrous formation achieved by sintering PVA/zinc acetate precursor fibers via electrospinning. Highly brittle fibrous ZnO mat was dipped into a PVDF polymer solution and then pressed to form pellets. The second process employed commercial ZnO nanopowder material. The powder was mixed into a PVDF/acetone polymer solution, and the resultant paste was pressed to form pellets. The free standing composite pellets with electrodes on the top and bottom surfaces were then subjected to sinusoidal electric excitation and response was recorded using a fotonic sensor. An earlier work on electrospun PVDF fiber mats was also summarized here and the electromechanical characterization is reported.

scholarly journals Functionalization of Calcium Sulfate/Bioglass Scaffolds with Zinc Oxide Whisker

Molecules ◽  
2016 ◽  
Vol 21 (3) ◽  
pp. 378 ◽  
Author(s):  
Cijun Shuai ◽  
Jianhua Zhou ◽  
Dan Gao ◽  
Chengde Gao ◽  
Pei Feng ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Calcium Sulfate ◽  
Oxide Whisker

Study on the Properties of Microwave Absorption of Zinc Oxide Whisker

2006 ◽  
pp. 982-985
Author(s):  
Long Sheng Chu ◽  
Zuo Wan Zhou ◽  
Yong Zhao
Keyword(s):  
Zinc Oxide ◽  
Microwave Absorption ◽  
Oxide Whisker
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