Control of the size of etchable ion tracks in PVDF – Irradiation in an oxygen atmosphere and with fullerene C60

Kitamura, Akane; Yamaki, Tetsuya; Yuri, Yosuke; Koshikawa, Hiroshi; Sawada, Shin–ichi; Yuyama, Takahiro; Usui, Aya; Chiba, Ayano

doi:10.1016/j.nimb.2019.06.030

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…resulting in radiation degradation of macromolecules and formation of damaged channels (i.e., so-called "tracks") in the materials. During further etching of the irradiated films with solutions of alkalis, acids, oxidants, and other chemical reagents, the material fragments are washed out from the tracks, and a regular through porosity is formed [82][83][84][85][86][87][88][89][90][91][92][93][94]. To generate track-etched membranes based on the most known polymers, the etching process usually does not exceed 30-90 min.…”

Section: Discussionmentioning

confidence: 99%

Thermostable Nanoporous Polycyanurates

Fainleib¹,

Grigoryeva²,

Starostenko³

et al. 2023

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The monograph is devoted to the synthesis, analysis of the structure and morphology, porosity parameters and physicochemical properties of heat-resistant nanoporous polycyanurates, as well as the possibility of their application for gas separation. Nanoporous films obtained using reactive and inert porogens, high-boiling liquids, incomplete conversion of cyanate monomers, as well as radiation technologies (production of track membranes by bombarding thin films of polycyanurates with subsequent chemical etching and sensitization) are described.

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Section: Discussionmentioning

confidence: 99%

Thermostable Nanoporous Polycyanurates

Fainleib¹,

Grigoryeva²,

Starostenko³

et al. 2023

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Biocatalytic polymeric membranes to decrease biofilm fouling and remove organic contaminants in wastewater: a review

George

Anand

Kumar³

et al. 2022

Environ Chem Lett

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Thermally stable nanoporous cyanate ester resin/linear polyurethane hybrid networks created by nuclear technologies

Grigoryeva

Fainleib

Starostenko

et al. 2021

Polymer

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Thermally stable nanoporous polymer films have been created as promising materials for membrane technologies. Thermosetting Cyanate Ester Resins (CERs) and linear polyurethane (LPU) were combined by stepwise thermal curing, and the films of resulting hybrid polymers were irradiated with α-particles followed by chemical etching. Well-defined highly regular nanoporous structures were developed in the films as evidenced by using SEM. No significant changes in chemical structure of the polymer systems obtained after α-irradiation were observed by FTIR spectroscopy measurements. The polymer films obtained on the basis of hybrid networks with the CER/LPU composition equal to 90/10 wt.% had quite narrow pore diameter distribution with average pore diameters around 12 nm. DSC and TGA measurements showed that the thermal characteristics of the nanoporous films were sufficiently high (Тg ~ 167 °C to ~199 °C, Тd5% ~ 293-359 o C, and Тd max ~ 429-457 o C). The CER/LPU nanoporous thermosetting materials demonstrated effective gas transport properties tested with gases, such as О2, СО2, N2, and СН4. The combination of an additional sensitization step using -rays and longer time of chemical etching improved the properties of the nanoporous systems developed. Such materials open the way to numerous applications, for example, as ultrafiltration membranes for advanced technologies, especially under extreme conditions.

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Control of the size of etchable ion tracks in PVDF – Irradiation in an oxygen atmosphere and with fullerene C60

Cited by 3 publications

References 28 publications

Thermostable Nanoporous Polycyanurates

Thermostable Nanoporous Polycyanurates

Biocatalytic polymeric membranes to decrease biofilm fouling and remove organic contaminants in wastewater: a review

Thermally stable nanoporous cyanate ester resin/linear polyurethane hybrid networks created by nuclear technologies

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