Preparation of PVdF-based electrospun membranes and their application as separators

Ding, Yanhuai; Zhang, Ping; Long, Zhilin; Jiang, Yong; Xu, Fu; Wei, Di

doi:10.1088/1468-6996/9/1/015005

Cited by 70 publications

(34 citation statements)

References 5 publications

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“…Phase separation of the polymer solution for the preparation of porous membranes can be induced by several methods, including immersion precipitation, precipitation from the vapour phase, and thermally induced phase separation (TIPS) [7,8]. Until now, only a few works have been reported on preparation of PVDF microporous membrane via TIPS [4,[7][8][9][10]. This processing technique has proven to be a valuable method for making commercial membranes as it shows advantages such as low tendency for defect formation, high degrees of porosity and effective control of the pore size.…”

Section: Introductionmentioning

confidence: 99%

Tailoring porous structure of ferroelectric poly(vinylidene fluoride-trifluoroethylene) by controlling solvent/polymer ratio and solvent evaporation rate

California

Cardoso

Costa

et al. 2011

European Polymer Journal

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Ferroelectric macroporous poly(vinylidene fluoride-trifuoroethylene) membranes have been produced by isothermal crystallization from the solution at different temperatures starting from different diluted solutions of the co-polymer in dimethylformamide. In this way pore architecture, consisting in interconnected spherical pores can be obtained.The mechanism and kinetics of solvent evaporation was investigated and related to the evolution of the polymer microstructure. The mechanism underlying the pattern formation has been discussed on the light of the Flory-Huggins (FH) lattice teory, grain 2 boundary effects and the Cahn-Hilliard equation for mass conservation systems. It was also observed that the temperature or initial concentration of the crystallization process does not affect the phase, ferroelectric transition temperature or the melting temperature of the polymer.

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Section: Introductionmentioning

confidence: 99%

Tailoring porous structure of ferroelectric poly(vinylidene fluoride-trifluoroethylene) by controlling solvent/polymer ratio and solvent evaporation rate

California

Cardoso

Costa

et al. 2011

European Polymer Journal

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“…PVDF is a biocompatible polymer and scaffolds of electrospun membranes of this polymer have been reported [15,16]. Once again, the membrane structure and porosity play an important role in the performance of this material.…”

Section: Introductionmentioning

confidence: 99%

“…A few works have been reported on preparation of PVDF microporous membrane via TIPS [3,11,14,16,17]. TIPS has proven to be a valuable method for making commercial membranes.…”

Section: Introductionmentioning

confidence: 99%

The Role of Solvent Evaporation in the Microstructure of Electroactive β-Poly(Vinylidene Fluoride) Membranes Obtained by Isothermal Crystallization

et al. 2010

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Electroactive -poly(vinylidene fluoride) membranes were obtained by isothermal crystallization from the solution. Different morphologies and microstructures were obtained by crystallizing at different temperatures. The mechanism and kinetics of solvent evaporation from the polymeric solution were investigated using isothermal thermogravimetric analysis. The kinetic parameters and the activation energy were also 2 calculated. The solvent evaporation is ruled by two steps, related with a metastableunstable -metastable transition in the solution phase diagram. Scanning electron microscopy revealed the porous structure and the variations of the morphology with the variation of the isothermal evaporation temperature. Finally, the infrared spectroscopy measurements confirm that the polymer crystallizes in the electroactive -phase of PVDF.

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“…[10] PVDF scaffolds of electrospun membranes of this polymer have been reported. [11] A number of procedures are available to produce porous PVDF with more or less controlled pore morphology. From the point of view of cell culture the interest is an interconnected pore structure that allows cell seeding and diffusion of nutrients and waste products of the cell metabolism.…”

Section: Introductionmentioning

confidence: 99%

Poly[(vinylidene fluoride)‐co‐trifluoroethylene] Membranes Obtained by Isothermal Crystallization from Solution

Ferreira

Silva

Sencadas

et al. 2010

Macro Materials & Eng

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Electroactive macroporous poly[(vinylidene fluoride)‐co‐trifluoroethylene] membranes have been produced by solvent evaporation at room temperature, starting with a diluted solution of the copolymer in dimethylformamide. The pore architecture consists of interconnected spherical pores. This architecture is independent of the membrane thickness. The thickness of the membranes ranges from a few to several hundred µm, using spin coating and evaporation in static conditions, respectively. The pore structure is explained by a spinodal decomposition of the liquid/liquid phase separation and crystallization in the copolymer‐rich phase.magnified image

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Preparation of PVdF-based electrospun membranes and their application as separators

Cited by 70 publications

References 5 publications

Tailoring porous structure of ferroelectric poly(vinylidene fluoride-trifluoroethylene) by controlling solvent/polymer ratio and solvent evaporation rate

Tailoring porous structure of ferroelectric poly(vinylidene fluoride-trifluoroethylene) by controlling solvent/polymer ratio and solvent evaporation rate

The Role of Solvent Evaporation in the Microstructure of Electroactive β-Poly(Vinylidene Fluoride) Membranes Obtained by Isothermal Crystallization

Poly[(vinylidene fluoride)‐co‐trifluoroethylene] Membranes Obtained by Isothermal Crystallization from Solution

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