Persulphate-Co2+-Bisulphite Initiated Aqueous Polymerization of Acrylamide and Retardation by Organic Solvents
Corresponding Author(s) : A.K. Bajpai
Asian Journal of Chemistry,
Vol. 7 No. 3 (1995): Vol 7 Issue 3
Abstract
The aqueous polymerization of acrylamide initiated by the persulphate metabisulphite redox couple and catalyzed by CO2+ ions has been iodometrically studied in atmospheric oxygen over the temperature range from 25º to 45 ± 0.2ºC. The effect of varying concentration of monomer, persulphate, bisulphite and CO2+ ions on the course of polymerization has been investigated. The following rate depgndence has been observed: Rp α [Monomer]1.0 [CO2+]1.0 [HSO:3–]0 [PS]1.0. Various inorganic salts and organic solvents were added to the reaction medium and the rate of polymerization was observed with a special emphasis on the retarding behaviour of organic solvents. The energy of activation was calculated to be 10.8 kcal/mol.
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