ISSN:
0449-2951
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Radical polymerization of acrylonitrile in liquid sulfur dioxide was carried out at 50°C. with α,α-azobisisobutylonitrile as an initiator. When aniline (An), dimethylaniline (DMA), dimethyl-o-toluidine (DMoT), and diethylaniline (DEA) were added to this system, it was found that each base acted as a retarder for the polymerization. When the chain transfer constant was calculated for each base, the values were 1.0 (An), 1.5 (DMA), 3.0 (DMoT), and 9.3 (DEA). The Alfrey-Price etr values calculated from these values were -2.79 (An), -3.14 (DMA), -3.72 (DMoT), and -4.66 (DEA). On plotting these values against pKa of each base, a linear relationship was found.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1964.100020905
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