Radiation-induced copolymerization of methyl trifluoroacrylate with propylene
Copolymerization of methyl trifluoroacrylate (MTFA) with propylene in bulk was induced by ..gamma.. irradiation. A wide range of the initial monomer composition gives an equimolar alternating copolymer. The reactivity ratios of r/sub 1/ (MTFA) and r/sub 2/ (propylene) were determined to be 0.01 and 0.005, respectively. The polymerization rate at an equimolar monomer composition is proportional to the 1.0 power of the dose rate. The dose rate dependency of higher than 0.5 may be ascribed to unimolecular termination due to a degradative chain transfer of propagating radicals to propylene. The G values of the initiating radical formation and the polymerization reaction were calculated to be 1.78 and 1336, respectively. The dependence of the copolymerization rate on the temperature was small, and the activation energy of copolymerization was 1.1 kcal/mole from -6 to 50/sup 0/C. 7 figures.
- Research Organization:
- Japan Atomic Energy Research Inst., Takasaki, Japan
- OSTI ID:
- 6101620
- Journal Information:
- J. Polym. Sci., Polym. Chem. Ed.; (United States), Vol. 17:6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
ACRYLATES
CHEMICAL RADIATION EFFECTS
ORGANIC FLUORINE COMPOUNDS
PROPYLENE
ACTIVATION ENERGY
COPOLYMERIZATION
G VALUE
GAMMA RADIATION
IRRADIATION
LOW TEMPERATURE
MEDIUM TEMPERATURE
MONOMERS
POLYMERIZATION
RADIATIONS
REACTIVITY
ALKENES
CARBOXYLIC ACID SALTS
CHEMICAL REACTIONS
CHEMISTRY
ELECTROMAGNETIC RADIATION
ENERGY
HYDROCARBONS
IONIZING RADIATIONS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
400600* - Radiation Chemistry
360406 - Materials- Polymers & Plastics- Radiation Effects- (-1987)