Interaction of Poly(vinylidene fluoride) with Graphite Particles. 1. Surface Morphology of a Composite Film and Its Relation to Processing Parameters

2003 ◽  
Vol 15 (4) ◽  
pp. 850-861 ◽  
Author(s):  
Mikyong Yoo ◽  
Curtis W. Frank ◽  
Shoichiro Mori
Keyword(s):  
Surface Morphology ◽  
Composite Film ◽  
Vinylidene Fluoride ◽  
Processing Parameters ◽  
Graphite Particles ◽  
Poly Vinylidene Fluoride

scholarly journals A Review on Porous Polymeric Membrane Preparation. Part I: Production Techniques with Polysulfone and Poly (Vinylidene Fluoride)

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1160 ◽  
Author(s):  
XueMei Tan ◽  
Denis Rodrigue
Keyword(s):  
Phase Separation ◽  
Vinylidene Fluoride ◽  
Solvent System ◽  
Processing Parameters ◽  
Membrane Preparation ◽  
Polymeric Membrane ◽  
Ambient Conditions ◽  
Membrane Fabrication ◽  
Core Technology ◽  
Poly Vinylidene Fluoride

Porous polymeric membranes have emerged as the core technology in the field of separation. But some challenges remain for several methods used for membrane fabrication, suggesting the need for a critical review of the literature. We present here an overview on porous polymeric membrane preparation and characterization for two commonly used polymers: polysulfone and poly (vinylidene fluoride). Five different methods for membrane fabrication are introduced: non-solvent induced phase separation, vapor-induced phase separation, electrospinning, track etching and sintering. The key factors of each method are discussed, including the solvent and non-solvent system type and composition, the polymer solution composition and concentration, the processing parameters, and the ambient conditions. To evaluate these methods, a brief description on membrane characterization is given related to morphology and performance. One objective of this review is to present the basics for selecting an appropriate method and membrane fabrication systems with appropriate processing conditions to produce membranes with the desired morphology, performance and stability, as well as to select the best methods to determine these properties.

scholarly journals Structure–Properties Relationship of Electrospun PVDF Fibers

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1221 ◽  
Author(s):  
Klara Castkova ◽  
Jaroslav Kastyl ◽  
Dinara Sobola ◽  
Josef Petrus ◽  
Eva Stastna ◽  
...  
Keyword(s):  
Vinylidene Fluoride ◽  
Longitudinal Direction ◽  
Processing Parameters ◽  
Electrospinning Process ◽  
Physical Parameters ◽  
Hexadecyltrimethylammonium Bromide ◽  
Piezoelectric Activity ◽  
Poly Vinylidene Fluoride ◽  
Versatile Technique ◽  
Relationship Of

Electrospinning as a versatile technique producing nanofibers was employed to study the influence of the processing parameters and chemical and physical parameters of solutions on poly(vinylidene fluoride) (PVDF) fibers’ morphology, crystallinity, phase composition and dielectric and piezoelectric characteristics. PVDF fibrous layers with nano- and micro-sized fiber diameters were prepared by a controlled and reliable electrospinning process. The fibers with diameters from 276 nm to 1392 nm were spun at a voltage of 25 kV–50 kV from the pure PVDF solutions or in the presence of a surfactant—Hexadecyltrimethylammonium bromide (CTAB). Although the presence of the CTAB decreased the fibers’ diameter and increased the electroactive phase content, the piezoelectric performance of the PVDF material was evidently deteriorated. The maximum piezoelectric activity was achieved in the fibrous PVDF material without the use of the surfactant, when a piezoelectric charge of 33 pC N−1 was measured in the transversal direction on a mean fiber diameter of 649 nm. In this direction, the material showed a higher piezoelectric activity than in the longitudinal direction.

Enhanced ferroelectricity and energy storage in poly(vinylidene fluoride)–clay nanocomposite films via nanofiller surface charge modulation

RSC Advances ◽  
2015 ◽  
Vol 5 (104) ◽  
pp. 85884-85888 ◽  
Author(s):  
Y. Wang ◽  
J. Li ◽  
Y. Deng
Keyword(s):  
Energy Storage ◽  
Composite Film ◽  
Vinylidene Fluoride ◽  
Electronic Devices ◽  
Nanocomposite Films ◽  
Simultaneous Increase ◽  
Organic Electronic Devices ◽  
Organic Electronic ◽  
Poly Vinylidene Fluoride ◽  
Charge Modulation

Simultaneous increase in ferroelectricity and energy storage was achieved in pvdf/mmt composite film indicating a good candidate for all-organic electronic devices.

Sign in / Sign up

Export Citation Format

Share Document