Poly(vinylidene fluoride)-polyacrylonitrile blend flat-sheet membranes reinforced with carbon nanotubes for wastewater treatment

Three electrochemical double layer capacitor (EDLC) cells (Cell X, Y and Z) made from an electrode of 90 wt. % of the multiwalled commercial carbon nanotubes, 10 wt. % of poly (vinylidene fluoride-co-hexafluoropropylene) and three different samples of electrolytes polymer electrolyte made up of a compositions of 50:50, 60:40 and 70:30 wt.% of H3PO4/PVA (in ratio) soaked in a filter paper was characterized in this study. The aim is to ascertain the disparities in performances of the cells in relation to their respective scan rates. Cyclic voltammetry (CV) measurement of cells shows a high specific capacitance of 313 Fg−1 for the scan rates 10 mV was recorded from the cell with the highest composition H3PO4/PVA ratio (i.e. 70:30 wt.%). However, when the CV of the cell was measured with different scan rates, disparities in the performance occurred, as only 94 and 174 Fg−1 was recorded at the scan rates 100 and 50 mV respectively for cell-X. The result was not different when the two other cells (60:40 and 70:30 wt. % of H3PO4/PVA) were measured at the same scan rates.

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High thermal conductive poly(vinylidene fluoride)-based composites with well-dispersed carbon nanotubes/graphene three-dimensional network structure via reduced interfacial thermal resistance

Composites Science and Technology ◽

10.1016/j.compscitech.2019.107713 ◽

2019 ◽

Vol 181 ◽

pp. 107713 ◽

Cited By ~ 17

Author(s):

Hong Guo ◽

Jun Liu ◽

Qin Wang ◽

Meiling Liu ◽

Chunyu Du ◽

...

Keyword(s):

Carbon Nanotubes ◽

Thermal Resistance ◽

Network Structure ◽

Vinylidene Fluoride ◽

Three Dimensional ◽

Interfacial Thermal Resistance ◽

Dimensional Network ◽

Poly Vinylidene Fluoride

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Crystallization and concentration fluctuation of miscible poly(vinylidene fluoride)/poly(methyl methacrylate) blends containing carbon nanotubes: Molecular weight dependence of poly(methyl methacrylate)

European Polymer Journal ◽

10.1016/j.eurpolymj.2018.01.022 ◽

2018 ◽

Vol 105 ◽

pp. 478-490 ◽

Cited By ~ 1

Author(s):

Yi-ning Xie ◽

Dan-feng Liu ◽

De-Xiang Sun ◽

Jing-hui Yang ◽

Xiao-dong Qi ◽

...

Keyword(s):

Carbon Nanotubes ◽

Molecular Weight ◽

Methyl Methacrylate ◽

Vinylidene Fluoride ◽

Concentration Fluctuation ◽

Poly Methyl Methacrylate ◽

Molecular Weight Dependence ◽

Poly Vinylidene Fluoride

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Enhanced Electromechanical Properties in Poly(Vinylidene Fluoride) (PVDF)-Based Nanocomposites

Volume 2: Multifunctional Materials; Enabling Technologies and Integrated System Design; Structural Health Monitoring/NDE; Bio-Inspired Smart Materials and Structures ◽

10.1115/smasis2009-1337 ◽

2009 ◽

Author(s):

Sujay Deshmukh ◽

Zoubeida Ounaies

Keyword(s):

Carbon Nanotubes ◽

Vinylidene Fluoride ◽

Single Walled Carbon Nanotubes ◽

Electromechanical Properties ◽

Molecular Chemistry ◽

Single Walled Carbon ◽

Β Phase ◽

Alternative Approach ◽

Poly Vinylidene Fluoride ◽

Walled Carbon Nanotubes

Efforts to enhance the electromechanical properties of Poly(vinylidene fluoride) (PVDF) and its copolymers have been directed at optimizing the molecular chemistry, stretching and poling parameters. This study investigates an alternative approach to enhancing the properties via adding nanoinclusions in PVDF. We investigate the enhanced electrostrictive response in PVDF by adding Single Walled Carbon Nanotubes (SWNTs). We also show the change in the non-polar morphology of “as-is” PVDF to the polar γ phase by adding SWNTs and eventually to the piezoelectric β phase by stretching the nanocomposites.

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Fabrication of a PVDF membrane with tailored morphology and properties via exploring and computing its ternary phase diagram for wastewater treatment and gas separation applications

RSC Advances ◽

10.1039/d0ra07592b ◽

2020 ◽

Vol 10 (66) ◽

pp. 40373-40383

Author(s):

S. Ashtiani ◽

M. Khoshnamvand ◽

P. Číhal ◽

M. Dendisová ◽

A. Randová ◽

...

Keyword(s):

Phase Diagram ◽

Wastewater Treatment ◽

Phase Separation ◽

Ternary Phase ◽

Vinylidene Fluoride ◽

Ternary Phase Diagram ◽

Simple Approach ◽

Hydrophobic Properties ◽

Pvdf Membrane ◽

Poly Vinylidene Fluoride

We report a simple approach for tailoring the morphology of poly(vinylidene fluoride) (PVDF) membranes fabricated using a nonsolvent induced phase separation (NIPS) method that sustains both the hydrophilic and hydrophobic properties.

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