Polyketones and polysulfones for conservation in the ethylene polymer industry. Progress report No. 5, April-June 1979
Reaction kinetic studies were continued on the /sup 60/Co gamma-induced polymerization of ethylene-SO/sub 2/ (Et-SO/sub 2/) mixtures. A peak in reactivity, as measured by an overall G-value of 8.4 x 10/sup 4/ molecules/100 eV, was found at 1.9 mole % SO/sub 2/ for gas-phase mixtures containing up to 6.7 mole % SO/sub 2/ and over a pressure range of 22.3 to 56.1 atm. Overall rates and G-values were obtained for liquid-phase SO/sub 2/ saturated with ethylene at up to 58.2 atm total pressure. A maximum G-value of 1.3 x 10/sup 5/ molecules/100 eV was found in the pressure range of 34.0 to 58.2 atm. Inert gases such as helium and nitrogen in Et-SO/sub 2/ gas mixtures were found to reduce peak G-values by an amount greater than could be accounted for on the basis of dilution alone. The additional effect is believed to be due to buildup of an inert gas diffusion barrier at the polymerization sites. The /sup 60/Co gamma-induced polymerization of propylene-SO/sub 2/ mixtures was investigated briefly. For the gas-phase system containing 0 to 50 mole % SO/sub 2/ in the 1 to 5 atm range, a maximum rate was found at equimolar gas composition. No other peak was found at a lower SO/sub 2/ concentration. The data indicate a power of 3 dependence of the rate on pressure and a power of 2 dependence of the G-value on pressure. A G-value of 1.38 x 10/sup 5/ molecules/100 eV was obtained for liquid SO/sub 2/ saturated with propylene at 6.24 atm. Both gas-phase and liquid-phase product analyzed approximately 1:1 molar ratio propylene/SO/sub 2/.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States); Tenneco Chemicals, Inc., Piscataway, NJ (USA)
- DOE Contract Number:
- EY-76-C-02-0016
- OSTI ID:
- 5776377
- Report Number(s):
- BNL-51080
- Country of Publication:
- United States
- Language:
- English
Similar Records
Polyketones and polysulfones for conservation in the ethylene polymer industry. Progress report No. 6, July-September 1979
Polyketones and Polysulfones for Conservation in the Ethylene Polymer Industry. Progress Report No. 3, October--December 1978.
Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ETHYLENE
POLYMERIZATION
PLASTICS INDUSTRY
ENERGY CONSERVATION
POLYETHYLENES
PRODUCTION
RESEARCH PROGRAMS
PROPYLENE
COBALT 60
SULFUR DIOXIDE
ALKENES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHALCOGENIDES
CHEMICAL REACTIONS
COBALT ISOTOPES
HYDROCARBONS
INDUSTRY
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
POLYMERS
POLYOLEFINS
RADIOISOTOPES
SULFUR COMPOUNDS
SULFUR OXIDES
YEARS LIVING RADIOISOTOPES
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes
400600 - Radiation Chemistry