Thin poly(ionic liquid) and poly(vinylidene fluoride) blend films with ferro- and piezo-electric polar γ-crystals

2018 ◽  
Vol 56 (10) ◽  
pp. 795-802 ◽  
Author(s):  
Vimal K. Tiwari ◽  
Yujeong Lee ◽  
Giyoung Song ◽  
Kang Lib Kim ◽  
Youn Jung Park ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Vinylidene Fluoride ◽  
Blend Films ◽  
Poly Vinylidene Fluoride ◽  
Poly Ionic Liquid ◽  
Piezo Electric

Zinc Oxide-Based Pseudocapacitors with Electrospun Poly(Vinylidene Fluoride)/Poly(Ionic Liquid) Nanofibers as Solid Polymer Electrolyte

2021 ◽  
Vol 889 ◽  
pp. 112-119
Author(s):  
Jonathan N. Patricio ◽  
Eduardo C. Atayde Jr. ◽  
Marco Laurence M. Budlayan ◽  
Susan D. Arco
Keyword(s):  
Ionic Liquid ◽  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Sessile Drop ◽  
Functional Materials ◽  
Solid Polymer ◽  
Scanning Electron Micrographs ◽  
Area Functional ◽  
Poly Vinylidene Fluoride ◽  
Poly Ionic Liquid

Due to the interesting properties of polymerized ionic liquids (PILs), studies are carried out to evaluate its performance when in composite with other synthetic polymers. Research on blend films prepared through solution casting are typically done to investigate their properties, however, electrospun fibers are of particular interest especially on technologies requiring mechanically robust and high surface area functional materials. In this work, poly (vinylidene fluoride)/poly (ionic liquid) (PVdF/PIL) nanofibers were produced through electrospinning. The PIL, poly (1-hexyl-3-vinyl imidazolium bromide), was synthesized through sonochemical solventless reaction followed by free radical polymerization. The structures of the synthesized IL and PIL were confirmed using FT-IR, 1H-NMR and 13C-NMR spectroscopy. Pseudocapacitor prototypes consisting of electrodeposited ZnO-based electrodes and the electrospun PVdF/PIL nanofibers as the polymer electrolyte were then fabricated at varied PIL concentrations. Contact angle measurements using sessile drop method revealed the decreasing wettability of the fibers attributed to the inherent hydrophobic nature of both the PVdF and PIL. Scanning electron micrographs also showed that increasing fiber diameters were obtained as the PIL concentration increases. In addition, cyclic voltammetry results showed that the calculated areal capacitance also increases with increasing PIL concentration. The development of pseudocapacitor assemblies utilizing ZnO-based electrodes and electrospun polymer electrolyte-separator membranes presents a better promise for the next-generation energy storage devices.

scholarly journals Crystallization Monitoring of Semicrystalline Poly(vinylidene fluoride)/1-Ethyl-3-methylimidazolium Hexafluorophosphate [Emim][PF6] Ionic Liquid Blends

2021 ◽  
Author(s):  
Daniela M. Correia ◽  
Carlos M. Costa ◽  
José C. Rodríguez Hernández ◽  
Isabel Tort-Ausina ◽  
Laura Teruel Biosca ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Vinylidene Fluoride ◽  
Poly Vinylidene Fluoride ◽  
Crystallization Monitoring

scholarly journals All-Fiber Pyro- and Piezo-electric Nanogenerator for IoT Based Self-Powered Health-Care Monitoring

2021 ◽  
Author(s):  
Biswajit Mahanty ◽  
Sujoy Kumar Ghosh ◽  
Kuntal Maity ◽  
KRITTISH ROY ◽  
Subrata Sarkar ◽  
...  
Keyword(s):  
Health Care ◽  
Carbon Nanotube ◽  
Vinylidene Fluoride ◽  
Electrospun Nanofibers ◽  
Multiwall Carbon Nanotube ◽  
Poly Vinylidene Fluoride ◽  
Self Powered ◽  
Health Care Monitoring ◽  
Multiwall Carbon ◽  
Piezo Electric

In this work, an all-fiber pyro- and piezo-electric nanogenerator (PPNG) is designed by multiwall carbon nanotube (MWCNT) doped poly(vinylidene fluoride) (PVDF) electrospun nanofibers as the active layer and interlocked conducting...

Preparation and Dye Removal Properties of Hyperbranched Polymeric Ionic Liquid/Poly(Vinylidene Fluoride) Composite Films

2017 ◽  
Vol 890 ◽  
pp. 192-195
Author(s):  
Wen Qi Song ◽  
Yu Yang Liu ◽  
Yu Hou ◽  
Yan Wang
Keyword(s):  
Ionic Liquid ◽  
Vinylidene Fluoride ◽  
Dynamic Condition ◽  
Adsorption Property ◽  
Composite Films ◽  
Bromophenol Blue ◽  
Inversion Method ◽  
Pvdf Film ◽  
Polymeric Ionic Liquid ◽  
Poly Vinylidene Fluoride

Based on the selective adsorption property of the imidazolium-type hyperbranched polymeric ionic liquid (hb-PIm+PF6-) towards anionic dyes, it was incorporated into poly(vinylidene fluoride) (PVDF) matrix to modify PVDF film. The composite hb-PIm+PF6-/PVDF films were prepared via non-solvent-induced phase inversion method. The obtained composite films were characterized by attenuated total reflectance-Fourier transform infrared spectroscopy, scanning electron microscopy, and contact angle goniometry. Using bromophenol blue (BPB, an acidic dye) as the model molecule, the dynamic and static adsorption properties of the hb-PIm+PF6-/PVDF films were investigated, respectively. It is significant that the hb-PIm+PF6-/PVDF composite films could efficiently remove BPB from water under dynamic condition.

scholarly journals Ionic and conformational mobility in poly(vinylidene fluoride)/ionic liquid blends: Dielectric and electrical conductivity behavior

Polymer ◽  
2018 ◽  
Vol 143 ◽  
pp. 164-172 ◽  
Author(s):  
D.M. Correia ◽  
R. Sabater i Serra ◽  
J.A. Gómez Tejedor ◽  
V. de Zea Bermudez ◽  
A. Andrio Balado ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Ionic Liquid ◽  
Vinylidene Fluoride ◽  
Conformational Mobility ◽  
Electrical Conductivity Behavior ◽  
Poly Vinylidene Fluoride ◽  
Conductivity Behavior

Influence of hydrophilic/hydrophobic protic ionic liquids (PILs) on the poly(vinylidene fluoride) (PVDF-ionic liquid) membrane properties

2020 ◽  
Vol 55 (35) ◽  
pp. 16697-16717
Author(s):  
Isabel Vázquez-Fernández ◽  
Adnane Bouzina ◽  
Mohamed Raghibi ◽  
Laure Timperman ◽  
Janick Bigarré ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Membrane ◽  
Vinylidene Fluoride ◽  
Membrane Properties ◽  
Protic Ionic Liquids ◽  
Poly Vinylidene Fluoride
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