ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The decomposition of 1,1,4,4-tetraphenyl-2-tetrazene (TPT) was carried out in four aprotic solvents [acetonitrile, dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and benezene]. ΔH≠ was found to decrease with increasing polarity of the solvent. The effect of TPT on the polymerization of methyl methacrylate (MMA) was also studied in the same solvents. TPT was found to be a retarder for the radical polymerization of MMA. The induction period is affected by the polarity of the medium. In addition, the chain-transfer constant of TPT (CTPT) was calculated to be 5,40, 4,00, 2, 78, and 3, 96 for the polymerization of MMA in acetonitrile, DMSO, DMF, and benzene, respectively. The transition state of the chain-transfer reaction seems to be influenced by the polarity of the solvent.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1982.021831014
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