High energy ion irradiation effect on electrical and optical properties of polymers

Asif, Muhammad; Ali, Amjad; Fuwad, Ahmed; Latif, A.; Rafique, Muhammad; Nawaz, Muhammad; Shahid, Muhammad Kashif

doi:10.1016/j.radphyschem.2021.109931

Cited by 11 publications

(4 citation statements)

References 34 publications

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“…These chemically active free radicals are the main cause for the rise in excited states number and so ( n ) rises. Comparing between current results and these discussed earlier, 36 the dual effect discussed above still controlling the overall properties; higher values of free radicals can be expected. The decrease in the refractive index values with the λ for all irradiated and unirradiated samples can be interpreted as: at low energy incident photons the degree of polarizability of the polymer molecules decreases therefore n decreases.…”

Section: Resultssupporting

confidence: 86%

“…Asif et al found that the optical transmittance in the IR range was developed for irradiated polyethylene‐terephthalate (PET), polymethyl‐methacrylate (PMMA) and acrylonitrile butadiene styrene (ABS) samples. Also, the reduction in optical band gap energies and resistivity values are observed for the ion exposed polymers 35,36 . Courrol et al found that the rising in the laser energies produced a rise in E. coli growth 37 .…”

Section: Introductionmentioning

confidence: 98%

“…Also, the reduction in optical band gap energies and resistivity values are observed for the ion exposed polymers. 35,36 Courrol et al found that the rising in the laser energies produced a rise in E. coli growth. 37 The optical parameters of dye doped PVA films affected when exposed to He -Ne laser.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of structure and optical characteristics of irradiated PVP/CMC nanocomposite films based on ZnS/SnO₂ nanofillers

Abdel‐Kader,

Mohamed,

Almarashi

et al. 2023

Vinyl Additive Technology

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PVP/CMC/50%ZnS‐50%SnO2 blends were formed by solid state reaction, sol‐gel methods and casting technique. The structure and the crystallite size of the nanofillers (ZnS and SnO2) were examined using x‐ray diffraction technique (XRD). The effect of laser irradiation energies compared to the proportions of loaded nanofillers on the films internal structure and morphology was studied using XRD. The high miscibility among blends has been confirmed through Fourier transform infrared spectroscopy (FTIR). The energy dispersive x‐ray spectroscopy (EDS) analysis proved the presence of the nanocomposite polymer blends constituent atoms. The blends surface morphology has been investigated through scanning electron microscope (SEM). The dual effect of both different laser energies and oxygen atoms content simultaneously, on the linear and nonlinear optical parameters of nanocomposite films were explored as well. Results showed that, the laser irradiation energy process has the highest enhancement on the optical properties. The optical band gap (Eg) values were reduced from 4.8 eV (in the case of unirradiated blend) to 3.5 eV (for blends irradiated with 150 mJ/cm2) for allowed direct transitions, but for allowed indirect transitions Eg decreased from 3.3 eV (for unirradiated) to 2.2 eV (for irradiated with 150 mJ/cm2).Highlights A comparative discussion upon the effect of excess oxygen atoms has been represented. A dominant effect for the laser exposure compared to both the particle size and excess oxygen atoms. The variations of the nanocomposite films structural and optical features were promising.

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Section: Resultssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 98%

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Investigation of structure and optical characteristics of irradiated PVP/CMC nanocomposite films based on ZnS/SnO₂ nanofillers

Abdel‐Kader,

Mohamed,

Almarashi

et al. 2023

Vinyl Additive Technology

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“…It can also be confirmed that the thin layers (in Figure 1 f) are mainly composed of C rather than Cr. It is reported that the polymer substrates are subject to degeneration under ion bombardment [ 21 ]. The formation of the thin layers might be attributed to a degenerative attrition of the ABS surface due to Cr ion bombardment.…”

Section: Resultsmentioning

confidence: 99%

Influence of Cr Ion Bombardment on the Growth of Cu Coatings Deposited by Magnetron Sputtering on ABS Substrates

2022

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Cu coatings were deposited on acrylonitrile-butadiene-styrene copolymer (ABS) substrates by DC magnetron sputtering with Cu target. Cr ions generated by arc evaporation were used to bombard the ABS substrates before the Cu coating process. The influences of the Cr ion bombardment on the surface topography and chemical bonds of the ABS substrates and the adhesion of the Cu coatings on the ABS substrate were studied using scanning electron microscopy, Fourier transform infrared spectroscopy, and micro-Scratch Tester as a function of bias voltage and treatment duration. The results show that the Cr ion bombardment causes Cr particles to embed in the surface. The Cr particles can interlock with the Cu coatings and ABS substrate and significantly improve the coating adhesion. In addition, the Cr particles can act as the nucleation sites of the Cu coatings and facilitate the growth of columnar crystals. Increasing the duration of Cr ion bombardment increases the number of Cr particles and, thus, enhances the adhesion. However, the continuous bombardment results in the degeneration of the ABS surface, causing the formation of the coarse columnar structure of the Cu coatings. Increasing the bias voltage can increase the energy of the Cr particles without causing degeneration of the ABS. The Cu coating deposited on the ABS substrate treated by Cr ion with high-bias voltage and short duration shows a dense and smooth growth structure. In contrast, the bombardment of the Cr ions carried out at high-bias voltage induces the formation of an interfacial layer (amorphous carbon-rich phase) in the ABS surface, which decreases the coating adhesion. It is believed that Cu coatings with strong adhesion and dense structures could be acquired on ABS substrates by optimizing the bias voltage and duration of the Cr ion bombardment pre-treatment.

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Thermal and mechanical characterization of ABS/15%PMMA co-extruded bilayer sheet

Khledj,

Hadj Miloud,

Mendas

et al. 2024

J Polym Res

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High energy ion irradiation effect on electrical and optical properties of polymers

Cited by 11 publications

References 34 publications

Investigation of structure and optical characteristics of irradiated PVP/CMC nanocomposite films based on ZnS/SnO₂ nanofillers

Investigation of structure and optical characteristics of irradiated PVP/CMC nanocomposite films based on ZnS/SnO₂ nanofillers

Influence of Cr Ion Bombardment on the Growth of Cu Coatings Deposited by Magnetron Sputtering on ABS Substrates

Thermal and mechanical characterization of ABS/15%PMMA co-extruded bilayer sheet

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High energy ion irradiation effect on electrical and optical properties of polymers

Cited by 11 publications

References 34 publications

Investigation of structure and optical characteristics of irradiated PVP/CMC nanocomposite films based on ZnS/SnO2 nanofillers

Investigation of structure and optical characteristics of irradiated PVP/CMC nanocomposite films based on ZnS/SnO2 nanofillers

Influence of Cr Ion Bombardment on the Growth of Cu Coatings Deposited by Magnetron Sputtering on ABS Substrates

Thermal and mechanical characterization of ABS/15%PMMA co-extruded bilayer sheet

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Investigation of structure and optical characteristics of irradiated PVP/CMC nanocomposite films based on ZnS/SnO₂ nanofillers

Investigation of structure and optical characteristics of irradiated PVP/CMC nanocomposite films based on ZnS/SnO₂ nanofillers