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Cationic degradation of polysulfides and polyethers by chemical initiators and irradiation
Author(s) -
Goethals E. J.,
van Meirvenne D.,
De Clercq R.
Publication year - 1988
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.19880130114
Subject(s) - cationic polymerization , monomer , degradation (telecommunications) , ethylene , chemistry , polymer chemistry , organic chemistry , photochemistry , polymer , catalysis , telecommunications , computer science
Degradation of polyacetals, polyoxiranes, polythiiranes, poly(ethylene disulfides) and poly(alkylene sulfides), initiated by cationic initiators, is a general phenomenom. The polyacetals lead to a mixture of monomer and cyclic oligomers; the polyoxiranes mainly to cyclic dimers. Cationic degradation of polythiiranes and poly(ethylene disulfides) leads to a variety of cyclic compounds the nature of which depends on the monomer substituents. Poly(alkylene sulfides) form the corresponding thiacycloalkanes. The mechanism of these degradations and the influence of substituents on the degradation products have been studied. Preliminary results on U.V. ‐ initiated cationic degradation of polythiiranes are reported.