Solid-state polymerization of long-chain vinyl compounds. VI. In-source polymerization of octadecyl acrylate by. gamma. -ray irradiation
The in-source polymerization of octadecyl acrylate in the lamellar crystal (hexagonal packing) by ..gamma..-ray irradiation has been investigated, as compared with the two-step and one-step postpolymerizations. The viscosity-average molecular weight is very high even in the initial stage and is practically saturated after 3 to 5 h, although the conversion increases successively with time. The molecular weight distribution of poly(octadecyl acrylate) obtained by in-source polymerization is very wide (M/sub w//M/sub n/ = 13.1, at 20/sup 0/C). The results of in-source polymerization of the long-chain vinyl compounds can be interpreted using the cone model for polymerization probability, similar to those of one-step and two-step postpolymerizations.
- Research Organization:
- Saitama Univ., Urawa, Japan
- OSTI ID:
- 6644758
- Journal Information:
- J. Polym. Sci., Polym. Chem. Ed.; (United States), Journal Name: J. Polym. Sci., Polym. Chem. Ed.; (United States) Vol. 19:2; ISSN JPLCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400600* -- Radiation Chemistry
ACRYLIC ACID ESTERS
CARBOXYLIC ACID ESTERS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CHROMATOGRAPHY
CONFIGURATION
CONICAL CONFIGURATION
DATA
ELECTROMAGNETIC RADIATION
ESTERS
EXPERIMENTAL DATA
GAMMA RADIATION
INFORMATION
IONIZING RADIATIONS
MEASURING INSTRUMENTS
MEDIUM TEMPERATURE
MOLECULAR WEIGHT
NUMERICAL DATA
ORGANIC COMPOUNDS
POLYMERIZATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
SEPARATION PROCESSES
TEMPERATURE EFFECTS
VISCOSIMETERS
VISCOSITY