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Solvation effect in thermal decomposition of 2,2′-azoisobutyronitrile on the N,N-dimethylformamide/acrylonitrile system

✍ Scribed by J. Szafko; W. Feist; B. Pabin-Szafko

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
528 KB
Volume
34
Category
Article
ISSN
0887-624X

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✦ Synopsis

The thermal decomposition rate constant of AIBN ( k d ) in N,N-dimethylformamide (DMF)/ acrylonitrile (AN) mixtures of various compositions at 60°C is studied. The k d value is (6.45 +. 0.3) X min-' for pure acrylonitrile.

The k d values of DMF/AN mixtures were found to be dependent on the mixture composition. This dependence is not a linear function of the monomer mole fraction ( x M ) , but has a minimum at ca. 70 mol % of AN. The relationship kd = f ( x M ) has been interpreted on the basis of the hypothesis of initiator solvation by monomer AN and solvent DMF. 0

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