Visualization and characterization of ion latent tracks in semicrystalline polymers by FESEM

Blonskaya, I.V.; Kirilkin, N.S.; Kristavchuk, O.V.; Lizunov, N.E.; Mityukhin, S.A.; Orelovich, O.L.; Polezhaeva, O.A.; Apel, P.Y.

doi:10.1016/j.nimb.2023.06.009

Cited by 3 publications

(5 citation statements)

References 54 publications

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“…Finally, as we were finishing this article, we became aware of an interesting experimental result presented in a recently published article [69], which, in our view, can serve as confirmation of the results of this study. In this article, the authors used a Hitachi SU8020 field emission scanning microscope (FESEM) to obtain micrographs of fractured PET film samples after irradiation with SHI and subsequent long-term treatment (up to 1000 h) with light from a low-pressure mercury fluorescent lamp with a suppressed short-wave part of the spectrum below 315 nm.…”

supporting

confidence: 72%

“…In our opinion, this provides an alternative interpretation of the FESEM micrographs in [69] as showing the distribution of electric fields on the fractured PET surfaces. The bright and dark grains are due to electric domains with, respectively, positive and negative charges in areas of the PET film unaffected by the SHI irradiation.…”

mentioning

confidence: 94%

“…In the absence of any technical details of the micrograph process in [69], there are, however, other possible interpretations of the observed patterns. The well-known electret properties of PET film lead to the presence of microregions of different polarities [17,39] and consequently to the formation of an electric microrelief on its surface.…”

mentioning

confidence: 97%

“…According to this book, areas where the substrate has a positive charge look bright and those with a negative charge look dark. The manufacturer of the FESEM Hitachi SU 8020 microscope used in [69] to examine the fractured SHI-irradiated and light-treated samples of PET film states that it has a routine capability for voltage contrast imaging. This allows the visualization of differences in the surface potentials of microregions of a sample under study, revealing its electrical microrelief [73].…”

mentioning

confidence: 99%

“…We also note that the authors of [69] estimated the width of the latent track from the brightness profile by using the spectral measure of full width at half maximum (FWHM). The brightness profile, however, has a spatial rather than spectral character, so the FWHM of the dark minima below the average in the brightness profile is less than half of the width of latent track (as can be seen from the micrograph itself), and indeed the quoted value of 28 ± 4 nm for Kr ions is close to the value of 22 nm found by X-ray methods for the radius of the latent track in PET film irradiated with Kr +14 ion with an energy of 100 MeV [30].…”

mentioning

confidence: 99%

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Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film

Tuleushev,

Harrison,

Kozlovskiy

et al. 2023

Polymers

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We present here a novel experimental study of changes after contact electrification in the optical transmission spectra of samples of both pristine and irradiated PET film treated with Kr+15 ions of energy of 1.75 MeV and a fluence of 3 × 1010 cm2. We used a non-standard electrification scheme for injecting electrons into the film by applying negative electrodes to both its surfaces and using the positively charged inner regions of the film itself as the positive electrode. Electrification led to a decrease in the intensity of the internal electric fields for both samples and a hypsochromic (blue) shift in their spectra. For the irradiated PET sample, electrification resulted in a Gaussian modulation of its optical properties in the photon energy range 2.3–3.6 eV. We associate this Gaussian modulation with the partial decay of non-covalent extended conjugated systems that were formed under the influence of the residual radial electric field of the SHI latent tracks. Our studies lead us to suggest the latent track in the PET film can be considered as a variband material in the radial direction. Consideration of our results along with other published experimental results leads us to conclude that these can all be consistently understood by taking into account both the swift and slow electrons produced by SHI irradiation, and that it appears that the core of a latent track is negatively charged, and the periphery is positively charged.

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supporting

confidence: 72%

mentioning

confidence: 94%

mentioning

confidence: 97%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film

Tuleushev,

Harrison,

Kozlovskiy

et al. 2023

Polymers

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Atomic-scale insights into damage produced by swift heavy ions in polyethylene

Babaev,

Akhmetov,

Gorbunov

et al. 2023

J Mater Sci

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Nanocomposites-Based Membranes for Wastewater Remediation and Desalination: A Mini Review

A. Sharaf,

Kloczkowski

2024

Nanotechnology and Nanomaterials

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The scarcity of clean water is the root cause of the global sustainability problem. It impacts billions of people and poses serious threats to the survival of all life forms. Membrane desalination produces fresh water from saline ones. The energy efficiency and water production are impacted by the membrane’s low water permeability. Sophisticated wastewater treatment technologies remove hazardous wastes and pollutants from water. Removing pollutants improves the chances for having access to clean and sustainable water. Polymer membrane technologies are paramount in conquering obstacles. In polymer membrane technology, polymer matrix-based nanocomposite membranes are among the most widely used due to their convenience. Environmentally friendly, economical, energy-efficient, operationally flexible, and practical are the main characteristics of these membranes and their constituent parts. To treat wastewater and remediate the environment, this review focuses on polymer and nanocomposite membranes. Additionally, stability, antibacterial qualities, and adsorption processes—all benefits of nanocomposite membranes have been explored. The objective of this review was to provide an overview of the use of polymer matrix-based nanocomposite membrane technology for the remediation of hazardous contaminants from water and wastewater/effluent, as well as to identify its limitations and future potential. Additionally, desalination is one industrial application for nanocomposite membranes.

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Visualization and characterization of ion latent tracks in semicrystalline polymers by FESEM

Cited by 3 publications

References 54 publications

Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film

Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film

Atomic-scale insights into damage produced by swift heavy ions in polyethylene

Nanocomposites-Based Membranes for Wastewater Remediation and Desalination: A Mini Review

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