Making porous membranes by chemical etching of heavy-ion tracks in β-PVDF films

Grasselli, Mariano; Betz, N.

doi:10.1016/j.nimb.2005.04.027

Cited by 47 publications

(35 citation statements)

References 14 publications

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“…Generally, PVDF membranes are usually prepared through thermally-induced phase separation [9] or immersion precipitation [10], but other methods are also developed to prepare PVDF membranes such as sintering [11], track etching [12] and phase separation using supercritical carbon dioxide as non-solvent [13], etc. Although, PVDF membranes have already been widely used in many fields, the high hydrophobicity characteristic of PVDF membranes also limits the enlarging of application fields.…”

Section: Introductionmentioning

confidence: 99%

Hydrophilicity, morphology and excellent adsorption ability of poly(vinylidene fluoride) membranes induced by graphene oxide and polyvinylpyrrolidone

Liu

Duan

Yang

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Introductionmentioning

confidence: 99%

Hydrophilicity, morphology and excellent adsorption ability of poly(vinylidene fluoride) membranes induced by graphene oxide and polyvinylpyrrolidone

Liu

Duan

Yang

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…In order to produce visible tracks in irradiated PVDF films, researchers have used several kinds of etching solutions; in most cases [8,9], a concentrated aqueous potassium hydroxide (KOH) solution with a potassium permanganate (KMnO 4 ) additive was maintained at a high temperature. These severe etching conditions produced irreversible chemical damage over the entire film including the non-irradiated part.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Nanopore Evolution in Track-Etched Poly(vinylidene fluoride) Membranes

Yamaki

Nuryanthi

Koshikawa

et al. 2012

Trans. Mat. Res. Soc. Japan

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We investigated the formation of track-etched membranes of poly(vinylidene fluoride) (PVDF), a type of fluoropolymer, in detail, using conductometry. A 25 µm-thick PVDF film was irradiated with a 450 MeV 129 Xe or 2.2 GeV 197 Au ion beam, and then the latent tracks were etched in a 9 mol dm -3 aqueous potassium hydroxide solution at 80ºC in a conductometric cell. This paper focuses on the theoretical basis of the conductometric method and the apparatus used in our study. Representative results are then given in terms of how the etching kinetics was affected by various experimental conditions including the irradiation parameters and cell voltages applied between the electrodes.

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“…Therefore, we have been trying to establish a preparation method of PVDF ion-track membranes (5)(6)(7). Researchers in the past employed several kinds of etching solutions to produce visible tracks in irradiated PVDF films; in most cases (8,9), a highly-concentrated aqueous potassium hydroxide (KOH) solution with a potassium permanganate (KMnO 4 ) additive was maintained at a high temperature. These severe etching conditions provided irreversible chemical damage all over the film including a non-irradiated part.…”

Section: Introductionmentioning

confidence: 99%

Conductometric Analysis for the Formation of Poly(Vinylidene Fluoride)-Based Ion Track Membranes

Yamaki¹,

Nuryanthi²,

Koshikawa³

et al. 2011

ECS Trans.

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Poly(vinylidene fluoride) (PVDF) films were irradiated with 450 MeV 129 Xe and 2.2 GeV 197 Au ion beams, and then the resulting latent tracks were etched in a 9 mol dm -3 aqueous KOH solution at 80ºC that had been poured into a conductometric cell. At the same time, the evolution of cylindrical nanopores was monitored by measuring the conductance through the membrane. This in-situ measurement enabled us to examine how the etching kinetics were affected by the various experimental conditions including the parameters (mass and velocity) of the bombarded ions and cell voltages applied between the electrodes. The track etch rate, V T , radial etch rate, V R , and pore radius reaching the final plateau significantly depended on the deposited energy within each track, which is represented by the linear energy transfer (LET). Interestingly, applying a higher voltage to the cell promoted track etching up to the breakthrough probably because the electrophoretic migration of dissolved products occurred out of each pore.

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Making porous membranes by chemical etching of heavy-ion tracks in β-PVDF films

Cited by 47 publications

References 14 publications

Hydrophilicity, morphology and excellent adsorption ability of poly(vinylidene fluoride) membranes induced by graphene oxide and polyvinylpyrrolidone

Hydrophilicity, morphology and excellent adsorption ability of poly(vinylidene fluoride) membranes induced by graphene oxide and polyvinylpyrrolidone

Investigation of Nanopore Evolution in Track-Etched Poly(vinylidene fluoride) Membranes

Conductometric Analysis for the Formation of Poly(Vinylidene Fluoride)-Based Ion Track Membranes

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