Localization of radiational damages in poly(methyl methacrylate)

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · High Energy Chem. (Engl. Transl.); (United States)

OSTI ID:5026695

Zhadanov, G S; Milinchuk, V K; Smolyanskii, A S

In the radiolysis of poly(methacrylate) with addition of methanol and ethanol at 77/sup 0/K, alcohol radicals are formed in a yield about twice as high as that of the macroradicals formed in the initial polymer. At the partition boundary between the plastified and unplastified regions of the polymer, there occur visually observed radiational damages (bubbles, cracks). The surface layers of the polymer treated by alcohol vapors after ..gamma..-radiation at 300/sup 0/K are decomposed by the action of organic solvents. The results indicate the appreciable role of defects in the radiational damage of the solid polymers, and confirm the hypothesis on the high three-dimensional localization of the ionizing radiation with a low value of linear energy transfer (LET). It has been suggested that the absorbed energy is transferred in the form of compressive stresses.

• Research Organization: Karpov Sci-Res. Physicochemical Institute
• OSTI ID: 5026695
• Journal Information: High Energy Chem. (Engl. Transl.); (United States), Journal Name: High Energy Chem. (Engl. Transl.); (United States) Vol. 20:1; ISSN HIECA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360406 -- Materials-- Polymers & Plastics-- Radiation Effects-- (-1987)
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ALCOHOLS
BUBBLE GROWTH
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
ELECTROMAGNETIC RADIATION
EMBRITTLEMENT
ESTERS
ETHANOL
GAMMA RADIATION
HYDROXY COMPOUNDS
HYPERFINE STRUCTURE
IONIZING RADIATIONS
METHANOL
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SOLVENTS
PHYSICAL RADIATION EFFECTS
PMMA
POLYACRYLATES
POLYMERS
POLYVINYLS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RADIOLYSIS
SOLVENTS
STRESS ANALYSIS
SURFACE TREATMENTS
YIELDS