Radiation-Induced Copolymerization of Acrylonitrile and Methyl Methacrylate
Copolymerization of acrylonitrlie (AN) and methyl methacrylate (MMA) induced by ionizing radiation was investigated in bulk. Variables studied were: the dependence of the copolymerization rate on dose rate, polymerization at various temperatures. The copolymerization rate was proportional to the square root of dose rate in a molar equivalent mixture of monomers at room temperature. The apparent activation energy of the copolymerization was 4.62 kcal/mole in a molar equivalent mixture of the monomers. The copolymerization rate increased with a decrease of the mole fraction of AN in the monomer mixture at room temperature, while at --78 °C, maximum rate of copolymerization was observed in the mole fraction of AN of 0.75. It was concluded from the composition curves of copolymerization that the copolymerization probably proceeded by a radical mechanism in the range from 52.5 to -20 °C and by both anionic and radical mechanisms at around --78 °C.
- Research Organization:
- Japanese Assn. for Radiation Research on Polymers, Tokyo
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-028989
- OSTI ID:
- 4712757
- Journal Information:
- Kogyo Kagaku Zasshi, Journal Name: Kogyo Kagaku Zasshi Journal Issue: 11 Vol. 65; ISSN 0023-2734
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ACRYLIC ACID
CHEMICAL REACTIONS
CYANIDES
DIAGRAMS
EXCITATION
GAMMA RADIATION
LATTICES
LOW TEMPERATURE
METHACRYLIC ACID
METHYL RADICALS
MIXING
POLYMERIZATION
QUALITATIVE ANALYSIS
RADIATION CHEMISTRY
REACTION KINETICS
TEMPERATURE
X RADIATION