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- Title
Post-Irradiation Effects of the Influence of Radiation on a Mixture of Hydrocarbons.
- Authors
Jabbarova, L. Yu.; Mustafaev, I. I.; Akbarov, R. I.
- Abstract
Radiation-chemical effects on the structural-group composition of model mixtures of n-hexane−n-hexene in ratios of 95/5, 90/10, 80/20, and 60/40% under static conditions were studied. Laboratory studies were performed on a 60Co gamma-radiation source at a dose rate of P = 0.076 Gy/s in the absorbed dose range D = 27–78 kGy. The density, viscosity, and iodine numbers of the n-hexane−n-hexene mixtures were determined immediately after irradiation and 1, 2, and 7 months after irradiation at various absorbed doses to observe post-irradiation effects. The initial direction of radiation-chemical processes in mixtures with low n-hexene contents (5–10%) consisted of dehydrogenation and olefin formation. Two processes, i.e., olefin formation and polymerization, occurred simultaneously during gamma radiolysis of mixtures rich in n-hexene (20–40%). Irradiation of n-alkenes was accompanied by polymerization proceeding through a chain mechanism. The density and viscosity increased after irradiation of the mixtures while the iodine numbers decreased. The rate of polymerization during radiolysis of the n-hexane−n-hexene mixtures depended on the olefin concentration in the system and the absorbed dose. Polymerization became the dominant process in systems containing >20% olefins at doses >45 kGy.
- Subjects
ABSORBED dose; RADIATION; MIXTURES; POLYMERIZATION; IRRADIATION; HYDROCARBONS; ALKENES; RADIOLYSIS
- Publication
Journal of Applied Spectroscopy, 2023, Vol 90, Issue 4, p761
- ISSN
0021-9037
- Publication type
Article
- DOI
10.1007/s10812-023-01593-9