Formation of chemically resistant track membranes based on polyvinylidene fluoride

Головков, В. М.; Сохорева, В. В.; Sigfusson, T. I.

doi:10.1134/s0965544112070055

Cited by 7 publications

(8 citation statements)

References 1 publication

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“…The main results are presented in Table 10. The production of track-etched membranes with pore diameter in the nanometer or micrometer scale has been used in a variety of growing technological fields such as fuel cells [246].…”

Section: Methods Of Preparationmentioning

confidence: 99%

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

2019

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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.

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Section: Methods Of Preparationmentioning

confidence: 99%

“…The etching conditions, such as etchant composition and etching temperature, play critical roles on the channels morphology. In addition, ion-irradiated PVDF membranes heated in air prior to chemical etching leads to a more uniform pore size of the channels [246,252].…”

Section: Methods Of Preparationmentioning

confidence: 99%

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

2019

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“…Thus, several reported approaches considered enhancing the membrane performance by controlling the polymer solution, phase inversion parameters and post-treatment [36,40]. Higher water contact angles for chemically modified surfaces were reported in [41][42][43]. However, chemical modifications (alone) of a surface normally introduce limited/unstable enhancement of the contact angles.…”

Section: Introductionmentioning

confidence: 99%

Tuning PVDF Membrane Porosity and Wettability Resistance via Varying Substrate Morphology for the Desalination of Highly Saline Water

Baroud

2023

Membranes

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Here, we report the fabrication of a series of highly efficient polyvinylidene fluoride (PVDF) membranes via substrate morphology variations. A wide range of sandpaper grit sizes (150–1200) were utilized as casting substrates. The effect of the penetration of abrasive particles present on the sandpapers on the casted polymer solution was tuned, and the impact of these particles on porosity, surface wettability, liquid entry pressure and morphology were investigated. The membrane distillation performance of the developed membrane on sandpapers was evaluated for the desalination of highly saline water (70,000 ppm). Interestingly, the utilization of cheap and widely available sandpapers as a substrate for casting can not only help in tuning the MD performance, but also in producing highly efficient membranes with stable salt rejection (up to 100%) and a 210% increase in the permeate flux over 24 h. The findings in this study will help in delineating the role of substrate nature in controlling the produced membrane characteristics and performance.

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“…Polyvinylidene fluoride (PVDF) is a typical semi‐crystalline polymer with many merits, such as good corrosion resistance, flame retardant, wide operating temperature range, strong hydrophobicity, piezoelectric and thermoelectric properties 18–22 . Therefore, it has a wide range of applications as coatings, membrane materials, pipes, sensors, capacitors and energy harvesters 22,23 . However, the cost of PVDF resin is relatively high.…”

Section: Introductionmentioning

confidence: 99%

“…[18][19][20][21][22] Therefore, it has a wide range of applications as coatings, membrane materials, pipes, sensors, capacitors and energy harvesters. 22,23 However, the cost of PVDF resin is relatively high. To expand the application of PVDF, the incorporation of foaming into PVDF could obviously reduce its costs.…”

Section: Introductionmentioning

confidence: 99%

Achieving low‐thermal conductivity and high β phase in PVDF/PMMA blend foams via low‐pressure microcellular foaming

Weng

Ren

et al. 2022

J of Applied Polymer Sci

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Polyvinylidene fluoride (PVDF) foam exhibits wider applications than traditional foams such as polyethylene and polystyrene foams due to its good corrosion resistance, flame retardant and wide operating temperature range. However, PVDF is difficult to foam and rigorous operating conditions including high pressure and high temperature were unavoidably adopted to prepare PVDF foams. Herein, microcellular PVDF foam was successfully fabricated with the combination of adding polymethylmethacrylate (PMMA) and batch foaming at mild processing condition. Compared to the pure PVDF foam with a low‐expansion‐ratio of 1.1 times, the PVDF/PMMA (70/30) blend foam showed an expansion ratio as high as 20 times together with a small cell size of approximately 5 μm. Additionally, the prepared PVDF/PMMA blend foam exhibited a low‐thermal conductivity (0.039 w m−1 k−1) and high content of β‐phase crystal (95%), which shows promising application in areas like electronic devices, thermal insulation and packaging materials.

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Formation of chemically resistant track membranes based on polyvinylidene fluoride

Cited by 7 publications

References 1 publication

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

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

Tuning PVDF Membrane Porosity and Wettability Resistance via Varying Substrate Morphology for the Desalination of Highly Saline Water

Achieving low‐thermal conductivity and high β phase in PVDF/PMMA blend foams via low‐pressure microcellular foaming

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