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GAMMA-RAY INDUCED GRAFT COPOLYMERIZATION. VIII. GRAFT COPOLYMERIZATION OF STYRENE ON CELLULOSE ACETATE BY A PREIRRADIATION TECHNIQUE (in Japanese)

Journal Article · · Rept. Govt. Ind. Res. Inst., Nagoya
OSTI ID:4035896
;

The gamma -ray-induced graft copolymerization of styrene on cellulose acetate fibers by a pre-irradiation technique in air was studied. The grafting was not affected by the storing condition of the irradiated fibers, but the degree of grafting increased slightly with irradiation temperature from --78 to +100 deg C. The grafting seemed to be initiated by fairly stable peroxides produced in the irradiated fibers. The degree of grafting did not increase linearly but tended to saturate with the dose due to the decomposition of peroxides in the irradiated fibers by further irradiation. The rate of grafting showed 2.9 power dependence on the monomer concentration (as a benzene solution) at the dose rate of 6 x 10/sup 4/ r/hr. The grafting was completed within 60 min above 65 deg C, and the total degree of grafting decreased with the grafting temperature. Dependence of the molecular weight of grafted polystyrene (obtained by the hydrolysis of grafted fibers) and the total degree of grafting on the grafting temperature are discussed, and the activation energy of the peroxide decomposition was estimated to be about 25 kcal/mol. (from NSA of Japan)

Research Organization:
Government Industrial Research Inst., Nagoya, Japan
NSA Number:
NSA-18-017915
OSTI ID:
4035896
Journal Information:
Rept. Govt. Ind. Res. Inst., Nagoya, Journal Name: Rept. Govt. Ind. Res. Inst., Nagoya Vol. Vol: 12
Country of Publication:
Country unknown/Code not available
Language:
Japanese

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Related Subjects

ACETATES
AIR
BENZENE
CELLULOSE
CHEMICAL REACTIONS
CHEMISTRY
CONFIGURATION
DECOMPOSITION
DIAGRAMS
ENERGY LEVELS
EXCITATION
FIBERS
GAMMA RADIATION
GASES
HYDROLYSIS
LOW TEMPERATURE
MEASURED VALUES
MOLECULES
OPERATION
OXIDES
PEROXIDES
POLYMERIZATION
PREPARATION
QUANTITY RATIO
RADIATION CHEMISTRY
RADIATION DOSES
RADIOLYSIS
REACTION KINETICS
SOLUTIONS
STABILITY
STYRENE
TABLES
TEMPERATURE
VARIATIONS
WEIGHT