Investigation of the optical properties of unirradiated and irradiated sediments

Купчишин, А. И.; Niyazov, Marat N.; Лисицын, В. М.; Таипова, Б. Г.; Voronova, N A; Abdukhairova, A. T.; Khodarina, N N

doi:10.1088/1742-6596/1115/5/052035

Cited by 1 publication

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To confirm the results of the IR-spectroscopy studies and the structural analysis shown in Figures 5 and 6 and Table 1, we compare the results with those of British scientists' studies. They investigated PI films' physical and mechanical properties [15,16]. As a result, we supposed that the electrons' radiation was significantly reflected in the IR spectrum and expanded the bandwidths 2-6 times.…”

Section: Discussionmentioning

confidence: 99%

“…A characteristic feature of this polymer is that it has chemical resistance to external aggressive media, as well as high thermal stability at high and low temperatures. [15,16]. Such PCMs have unique properties, combining the advantages of high-temperature superconducting conductors (HTSC) and polymers, namely, these are the structural perfection of the polycrystallites, the mechanical strength and plasticity of polymers, their chemical resistance to aggressive media, etc.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Modification of Macromolecules of Polyimide Films by Electron Irradiation

et al. 2023

View full text Add to dashboard Cite

New polymeric materials formation by controlling their properties is the primary and most challenging problem in developing a methodology for synthesizing a chosen technology and its use. The combined effect of high-energy electron radiation and tensile stress will cause a decrease in crystallinity and the breakage of chemical bonds in polyimide film macromolecules and is a new approach in their production technology. The effect of uniaxial tension and electron irradiation on the modification of polyimide film at room temperature was studied. Irradiation of the films caused an increase in the intensity of the IR spectrum by ~2–6 times and an increase in the width of the bands. The intensity in the range of 1700–3500 cm−1 increased, indicating an increase in the content of radicals as a result of irradiation. The amplitudes of the electron paramagnetic resonance signal from non-irradiated films increased from 3 × 103 to 5 × 103 as a result of uniaxial tension to fracture, indicating an increase in radicals in the material. The lines of the electron paramagnetic resonance spectrum shifted from 3475.0 cm−1 to 3512.5 cm−1, with a simultaneous decrease in the signal’s amplitude from 6 ×103 to 4 × 103, as a result of the electron irradiation of the films, followed by their subjection to tension. This was due to a decrease in the concentration of the radicals of the =N-H and –N-H2 groups until their disappearance and the formation of new ones.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%