Sequence regulation in spontaneous binary and ternary copolymerizations via zwitterion intermediates

✍ Scribed by Saegusa, Takeo

• Publisher: Wiley (John Wiley & Sons)
• Year: 1981
• Weight: 397 KB
• Volume: 4
• Category: Article
• ISSN: 0025-116X
• DOI: 10.1002/macp.1981.020041981106

✦ Synopsis

This paper is concerned with the sequence regulation of monomeric units in a series of binary and ternary copolymerizations which proceed without any added catalyst or initiator. The binary copolymerization is consisted of the combination of a nucleophilic monomer (MN) and an electrophilic monomer (ME). The interaction between the two monomers generates a zwitterion of a 1:l adduct, which is the key intermediate in the copolymerization producing 1:l alternating copolymer. The varieties of MN and ME monomers, the structures of key intermediates of zwitterions, and the schema of copolymerizations have been discussed. In addition, the "Sequence-Ordered 1:1:1 Terpolymerization" (producing terpolymers of a type .... ABCABCABC . . a * ) and "2:l Binary Copolymerization" (producing copolymers of a type of .... ABBABBABB .... ) are described, which have been developed on the basis of the above binary 1:l alternating copolymerization.