BLOCK-COPOLYMERS FROM ISOBUTYL VINYL ETHER AND 2-CHLOROETHYL VINYL ETHER

Scope and limitation of the vinyl ether block copolymerization of isob utyl vinyl ether (IBVE) and 2-chloroethyl vinyl ether (CEVE) initiated by CH3CHIOR/ZnI2 were studied. These polymerizations exhibit the char acteristics of a living polymerization. Di- and triblock copolymers we re synthesized by sequential monomer addition (IBVE, CEVE). The poly(2 -chloroethyl vinyl ether) (PCEVE) segment in those block copolymers is of particular interest because of the possibility to modify this segm ent by nucleophilic substitution of the chlorine. This strategy allows the synthesis of tailor made amphiphilic block copolymers.