Radiochemical oxidation of polyethylene: effect of the dose rate on the mechanical properties

Journal Article · Sun Nov 01 04:00:00 EST 1987 · High Energy Chem. (Engl. Transl.); (United States)

OSTI ID:5250477

Dalinkevich, A A; Kiryushkin, S G; Shemarov, F V; Shlyapnikov, Yu A

The change in the mechanical properties of polyethylene (PE) during radiolysis in air was investigated. Rupture of the macromolecules takes place in the reaction of ROOH with R* radicals with the formation of >C=O groups on the end of the chain. It was shown that the strength of PE decreases linearly with an increase in the concentration of >C=O groups. With a dose rate of 10/sup 4/ Gy/sec, oxidation takes place in diffusion conditions, decomposition of the surface layers and cross-linking of the middle layers take place as a result, and the strength of the polymer cannot change. The change in the strength properties of PE in the depth of the sample was measured.

• OSTI ID: 5250477
• Journal Information: High Energy Chem. (Engl. Transl.); (United States), Journal Name: High Energy Chem. (Engl. Transl.); (United States) Vol. 21:3; ISSN HIECA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
360605 -- Materials-- Radiation Effects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
COBALT 60
COBALT ISOTOPES
CROSS-LINKING
DECOMPOSITION
DIFFUSION
DISSOCIATION
DOSE RATES
DOSE-RESPONSE RELATIONSHIPS
ELECTROMAGNETIC RADIATION
GAMMA RADIATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KINETICS
MECHANICAL PROPERTIES
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDATION
PHYSICAL RADIATION EFFECTS
POLYETHYLENES
POLYMERIZATION
POLYMERS
POLYOLEFINS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RADIOISOTOPES
RADIOLYSIS
REACTION KINETICS
STRUCTURAL CHEMICAL ANALYSIS
YEARS LIVING RADIOISOTOPES