ISSN:
1435-1536
Keywords:
Polymerization acrylonitrile
;
ceric ion
;
sulphur compounds
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Polymerization of acrylonitrile was investigated using ceric ion-organic sulfur compounds reducing agent systems. The organic sulphur compounds used as the reductants are, thiourea, thioacetamide, 2-amino ethanethiol, cysteine, and thioglycolic acid. The rates of polymerization were measured within the temperature range of 25 to 40 °C. The initiation was by the radical produced from Ce4+-sulphur compounds reaction. The rate of monomer disappearance was proportional to [M]1.5, [S]0.5 and the rate of ceric disappearance was directly proportional to [S] and [Ce4+]. A kinetic scheme involving the initiation by the primary radical and termination of the growing polymer radicals by the mutual type has been suggested and the kinetic percentage have been evaluated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01411230
