Recording of carbon clusters and (–СН2–)n radicals in a vacuum at the site of irradiation (in situ) of polyethylene

Статья в журнале

For the first time, absorption bands of C atoms and carbon clusters C2, C3, C4, C5, and C6 were found in irradiated polyethylene. The relationship between the type and mass of –CH2–, –C2H4–, –C3H6–, –C4H8–, – C5H10–, – C6H12 – free radicals and clusters of C, C2, C3, C4, C5, and C6 with their ionization energy in electron-irradiated polyethylene has been established. The results are based on the measured transmission spectra of the films and calculated values of the absorption bands after each dose of electron exposure in a vacuum at the site of irradiation (in situ). A linear dependence of the energy position of absorption bands on the type and mass of free radicals and clusters has been obtained. By the areas of the absorption bands of free radicals and carbon clusters the contribution of each defect to their total concentration has been determined depending on the absorbed dose in the range of 104–107Gy. The established dependences correlate with the known regularities in the formation of colloidal and color centers during irradiation of alkali-halide crystals, photographic materials, and oxide compounds.

Журнал:

Polymer Degradation and Stability
Elsevier Ltd. (Oxford)
Индексируется в Scopus, Web of Science

Библиографическая запись: Mikhailov, M. M. Recording of carbon clusters and (–СН2–)n radicals in a vacuum at the site of irradiation (in situ) of polyethylene / M. M. Mikhailov // Polymer Degradation and Stability. - 2021. - N191. - P. 109682. - DOI:10.1016/j.polymdegradstab.2021.109682

Ключевые слова:

ABSORPTION BANDS CLUSTERS IONIZATION ENERGY IRRADIATION MASS POLYETHYLENE RADICALS

Индексируется в:

Автор: Михайлов М. М.

Год издания: 2021

Страницы: 109682 - 109682

Язык: Английский

DOI: 10.1016/j.polymdegradstab.2021.109682