Radiation-modified atactic polypropylene as a sensitizer for photodegradation of polyethylene. [Gamma rays]

Journal Article · Sat Dec 01 04:00:00 EST 1979 · J. Appl. Polym. Sci.; (United States)

DOI:https://doi.org/10.1002/app.1979.070241111· OSTI ID:5548905

Omichi, H; Hagiwara, M; Asano, M; Araki, K

Atactic polypropylene (APP) was dissolved in CCl/sub 4/ and irradiated with /sup 60/Co gamma rays in various gas atmospheres (air, O/sub 2/, N/sub 2/, and Cl/sub 2/). A small amount of the irradiated APP was blended with polyethylene (PE) as a sensitizer for photodegradation of PE. There was no significant acceleration of decrease in yield strength of PE with uv exposure when oxidized APP or chlorinated APP was used. On the contrary, the use of the APP which was both oxidized and chlorinated caused a considerable acceleration of decrease in both yield strength and elongation. From the fact that the amount of carbonyl groups formed in the matrix PE with uv light exposure was closely related to both the amount of carbonyl groups and the amount of C-Cl bonds existing in the APP before the uv exposure, it was concluded that the combined action of carbonyl groups and C-Cl bonds in the sensitizer is important in the promotion of the photodegradation of the matrix polymer.

• Research Organization: Japan Atomic Energy Research Inst., Takasaki
• OSTI ID: 5548905
• Journal Information: J. Appl. Polym. Sci.; (United States), Journal Name: J. Appl. Polym. Sci.; (United States) Vol. 24:11; ISSN JAPNA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
AIR
CARBON TETRACHLORIDE
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMISTRY
CHLORINATED ALIPHATIC HYDROCARBONS
CHROMATOGRAPHY
DATA
DATA FORMS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELONGATION
EXPERIMENTAL DATA
FLUIDS
GAMMA RADIATION
GAS CHROMATOGRAPHY
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
INFRARED SPECTRA
IONIZING RADIATIONS
ISOLATED VALUES
MECHANICAL PROPERTIES
MIXING
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYPROPYLENE
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
REAGENTS
SENSITIZERS
SEPARATION PROCESSES
SPECTRA
TIME DEPENDENCE
ULTRAVIOLET RADIATION
YIELD STRENGTH
YIELDS