Actions for Polyketones and polysulfones for conservation in the ethylene polymer industry. Progress report No. 5, April-June 1979 [electronic resource].

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Polyketones and polysulfones for conservation in the ethylene polymer industry. Progress report No. 5, April-June 1979 [electronic resource].

Published
Upton, N.Y. : Brookhaven National Laboratory, 1979.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 23 : digital, PDF file
Additional Creators
Brookhaven National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
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/.
Report Numbers
E 1.99:bnl-51080
bnl-51080
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Note
Published through SciTech Connect.
08/01/1979.
"bnl-51080"
Not Available.
Funding Information
EY-76-C-02-0016
View MARC record | catkey: 14761427