Solid-state polymerization of long-chain vinyl compounds. V. Two-step postpolymerization of octadecyl acrylate by temperature increase and by stepwise. gamma. -ray irradiation
Journal Article
·
· J. Polym. Sci., Polym. Chem. Ed.; (United States)
The mechanism of two-dimensional polymerization of octadecyl acrylate in lamellar crystal was investigated in two-step postpolymerizations by temperature increase and stepwise ..gamma..-ray irradiation in lieu of the usual one-step reaction. Two-step postpolymerizations by these procedures are interpreted satisfactorily by the cone model, which assumes that the polymerization probability of the monomer molecules in a single layer is distributed conically around the initiation point. It was found that the propagating radicals were living, even in the saturated stage, and the effect of the polymer chains already formed on the propagating and terminating reactions was evident. Furthermore, molecular weight distributions of the resultant poly(octadecyl acrylate) measured by gel permeation chromatography were broad. The number-average and weight average molecular weights (M/sub w//M/sub n/) for the two-step postpolymerizations were 4.71 to 7.03, whereas those for one-step reactions were 3.26 to 5.54.
- Research Organization:
- Saitama Univ., Urawa, Japan
- OSTI ID:
- 6692682
- 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
Similar Records
Solid-state polymerization of long-chain vinyl compounds. VI. In-source polymerization of octadecyl acrylate by. gamma. -ray irradiation
Solid-state polymerization of long-chain vinyl compounds. III. Mechanism of. gamma. -ray-initiated postpolymerization in layered structures of octadecyl methacrylate and acrylate
Polymerization of oriented monolayers of octadecyl acrylate. 1: Characterization of the reaction products
Journal Article
·
Sat Jan 31 23:00:00 EST 1981
· J. Polym. Sci., Polym. Chem. Ed.; (United States)
·
OSTI ID:6644758
Solid-state polymerization of long-chain vinyl compounds. III. Mechanism of. gamma. -ray-initiated postpolymerization in layered structures of octadecyl methacrylate and acrylate
Journal Article
·
Sun Jun 01 00:00:00 EDT 1980
· J. Polym. Sci., Polym. Chem. Ed.; (United States)
·
OSTI ID:5130001
Polymerization of oriented monolayers of octadecyl acrylate. 1: Characterization of the reaction products
Journal Article
·
Mon Jun 15 00:00:00 EDT 1998
· Journal of Colloid and Interface Science
·
OSTI ID:653270
Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
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
RADICALS
SEPARATION PROCESSES
TEMPERATURE EFFECTS
VISCOSIMETERS
VISCOSITY
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
RADICALS
SEPARATION PROCESSES
TEMPERATURE EFFECTS
VISCOSIMETERS
VISCOSITY