ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The monomer-monomer interaction plays important roles in many cases of alternating copolymerizations. This article describes first a review of alternating copolymerizations in terms of the varieties of the types of reactions, the types of monomers, and the combinations of monomers. The reactions of alternating copolymerizations are classified into the following five types; (i) free radical alternating copolymerization involving polar vinyl monomers (Type-1), (ii) free radical alternating copolymerization between olefins and acrylic monomers with the assistance of Lewis acids (Type-2), (iii) alternating copolymerization of olefins and diolefins with Ziegler-Natta catalysts (Type-3), (iv) ring-opening copolymerization of heterocyclic monomers (Type-4), and (v) spontaneous alternating copolymerization via zwitterion intermediates (Type-5). The monomers which have been involved in alternating copolymerizations are polar vinyl compounds, mono-olefins, diolefins, heterocyclic compounds, SO2, CO2 and isocyanates. Then, the general patterns of the mechanisms of sequence control were described, and the detailed mechanisms were discussed in the copolymerizations of Types-1, -2 and -5 in which the monomer-monomer interaction has been reported to be responsible for the initiation and the sequence regulation.
Additional Material:
4 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1979.020031979108
