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Effect of impurities on the polymerization of vinylcarbazole by azobisisobutyronitrile
Author(s) -
Ellinger L. P.
Publication year - 1965
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1965.070091216
Subject(s) - azobisisobutyronitrile , polymerization , anthracene , chemistry , chain transfer , phenanthrene , polymer chemistry , polymer , radical polymerization , kinetic chain length , chain growth polymerization , chain termination , photochemistry , organic chemistry
Polymerization of vinylcarbazole by free‐radical initiators, especially azobisisobutyronitrile, yields polymer of higher molecular weight and better appearance than can be made by thermal polymerization. The polymerization is retarded and the molecular weight of the polymer lowered by amounts of anthracene comparable to or somewhat larger than the initiator concentration, but these effects soon show saturation at higher anthracene concentrations. Phenanthrene has a slight inhibiting effect which increases with concentration, the polymerization being almost completely inhibited at very high phenanthrene concentrations. The results are discussed in terms of the formation of an intermediate complex between the aromatic hydrocarbon and the growing polymer chain.