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Regularities of cationic polymerization of substituted aziridines
Author(s) -
Ponomarenko V.A.,
Chekulaeva I.A.,
Lapshina I.V.,
Ignatenko A.V.
Publication year - 1986
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19860030118
Subject(s) - cationic polymerization , polymerization , boron trifluoride , chemistry , monomer , polymer chemistry , polymer , nucleophile , chain termination , aziridine , kinetic chain length , chain growth polymerization , chain transfer , living polymerization , ionic polymerization , anionic addition polymerization , organic chemistry , radical polymerization , catalysis , ring (chemistry)
Abstract The cationic polymerization of some ordinary N‐ and C‐substituted aziridines, initiated by the methyl etherate of boron trifluoride, shows a typical “temporarily living” character. Kinetic and spectroscopic data on the polymerization of N‐methyl‐aziridine under conditions under consideration as well as molecular mass characteristics of the polymers obtained, testify to the zwitter‐ions as active centres of chain growth. This process is characterized by slow initiation, stationarity of propagation and slow termination with the participation of the polymer chain just after a monomer is used up. Such peculiarity of zwitter‐ion polymerization allows to obtain liniar functional polyaziridines of given molecular mass by termination of the system by means of appropriate nucleophilic compounds.