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The features of cationic polymerization of lactones under the action of onium salts
Author(s) -
Rozenberg Boris
Publication year - 1990
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.19900320121
Subject(s) - cationic polymerization , onium , counterion , polymerization , chemistry , ionic polymerization , gel permeation chromatography , polymer chemistry , chain growth polymerization , photochemistry , organic chemistry , radical polymerization , polymer , ion
Results on the kinetics of polymerization of ϵ ‐caprolactone (ϵ ‐CL) under the action of quaternary onium salts with complex counterions are reported. The structure and molecular weight distribution (MWD) of polymerization products, and of the catalysts and active propagating centers were studied by gel permeation and gas chromatography, IR and UV spectroscopy, chemical and X‐ray analysis. The role of photochemical transformations at ϵ ‐CL polymerization in the presence of onium salts with counterion FeCl 4 was revealed. The mechanism of polymerization is discussed.