ESR study of pressure dependence of the peroxy radical decay in irradiated isotactic polypropylene

Journal Article · Tue Jun 01 04:00:00 EDT 1982 · J. Appl. Polym. Sci.; (United States)

DOI:https://doi.org/10.1002/app.1982.070270601· OSTI ID:6575924

Szocs, F

By the use of gamma radiation the free radicals were generated in isotactic polypropylene. The polymer was exposed to the action of atmospheric oxygen and the peroxy radicals were formed. Then the decay of peroxy radicals was investigated at varying temperatures as a function of pressure. The rate constants of the free radical decay were determined, and the corresponding activation volumes were calculated. The kinetic characteristics imply that the peroxy radicals predominantly occured in amorphous region the polymer. The results suggest that useful information on molecular mechanism of radical reactions in the solid phase may be obtained from the determination of activation volumes.

• Research Organization: Univ. of Basrah, Iraq
• OSTI ID: 6575924
• Journal Information: J. Appl. Polym. Sci.; (United States), Journal Name: J. Appl. Polym. Sci.; (United States) Vol. 27:6; ISSN JAPNA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400600* -- Radiation Chemistry
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
EXPERIMENTAL DATA
GAMMA RADIATION
HIGH PRESSURE
INFORMATION
IONIZING RADIATIONS
KINETICS
MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PEROXY RADICALS
POLYMERS
POLYOLEFINS
POLYPROPYLENE
PRESSURE DEPENDENCE
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
REACTION KINETICS
RESONANCE