Polymerization of N-vinylpyrrols

Autor: S. E. Korostova, T. T. Minakova, Al'bina I. Mikhaleva, T. A. Tandura, Boris A. Trofimov
Rok vydání: 1980
Předmět:
Zdroj: Journal of Polymer Science: Polymer Chemistry Edition. 18:1547-1550
ISSN: 1542-9369
0360-6376
DOI: 10.1002/pol.1980.170180511
Popis: The free polymerization of 2-methyl-1-vinylpyrrol (I), 2,3-dimethyl-1-vinylpyrrol (II), 1-vinyl-4,5,6,7-tetrahydroindol (III), 1-vinyl-2-phenylpyrrol (IV), and 1-vinyl-2-phenyl-5-trifluoroacetyl pyrrol (V) in the presence of azobisisobutyronitrile as an initiator at 60–80°C has been studied. The polymer yield (up to 90%) and molecular weight in the range 2000–13,000 are strongly dependent on the monomer structure and the polymerization conditions. The reactivity of N-vinylpyrrols studied falls in the order: I > III > II > V > IV implying an important role of the initial radical stabilization with the participation of the ring substituents as well as the steric hindrances in the propagation stage.
Databáze: OpenAIRE
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