Effects of Neutron Irradiation on Polymer

Prasher, Sangeeta; Kumar, Mukesh

doi:10.1007/978-3-030-05770-1_11

Cited by 1 publication

(4 citation statements)

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“…These ions and free radicals can subsequently cause molecule breakdown or cross‐link formation. Additionally, hydrogen evolution during irradiation is also considered 9 . These changes likely alter the polarizability of these composites.…”

Section: Results and Analysismentioning

confidence: 99%

“…Additionally, hydrogen evolution during irradiation is also considered. 9 These changes likely alter the polarizability of these composites.…”

Section: Dielectric Studiesmentioning

confidence: 99%

“…Unlike other forms of radiation, neutrons lack a charge but have a mass equivalent to protons, allowing them to interact primarily with nuclei as they traverse a material. This interaction can lead to various effects, including deflection with or without energy loss and absorption by the material's nucleus 9,10 . Exposure to high neutron fluence causes numerous defects in materials, leading to changes in physical properties.…”

Section: Introductionmentioning

confidence: 99%

“…including deflection with or without energy loss and absorption by the material's nucleus. 9,10 Exposure to high neutron fluence causes numerous defects in materials, leading to changes in physical properties. These changes include swelling, mechanical strength degradation, altered corrosion resistance, and modifications in optical, electrical, and thermal conductivity.…”

mentioning

confidence: 99%

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Hybrid polymer nanocomposites with tailored band gaps and UV absorption for advanced applications in optoelectronics and UV protection

Kavitha,

Eshwarappa,

Shilpa

et al. 2024

Polymers for Advanced Techs

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Herein we report the method to tailor the band gap and UV absorption of polyvinyl alcohol (PVA)/graphene oxide (GO)‐silver (Ag)/glutaraldehyde (GA) hybrid polymer nanocomposites. The modifications brought by neutron irradiation to the optical and dielectric characteristics enabled the band gap and UV absorption‐tailored polymer nanocomposites to be obtained. Neutron‐irradiated samples, compared with their unirradiated counterparts, exhibit a reduction in transmittance to 78%, rendering them opaque to UV–visible light after irradiation. The energy band gap decreases from 5.25 to 4.09 eV upon irradiation. Furthermore, upon neutron‐irradiation the relaxation time increases from 7.63 × 10−4 to 0.02 s which is evident by the shift in electric modulus imaginary part (M") peak to a lower frequency region, indicating an increase in relaxation time. The Cole–Cole plot for irradiated samples demonstrates lower fitting parameter (α) values of the modified Havriliak–Negami function, indicating a departure from pure capacitor‐like behavior. The neutron irradiation leads to a decrease in conductivity from 44.6 × 10−7 to 0.09 × 10−7 S/cm.

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Section: Results and Analysismentioning

confidence: 99%

“…Additionally, hydrogen evolution during irradiation is also considered. 9 These changes likely alter the polarizability of these composites.…”

Section: Dielectric Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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