Rate constant of propagation reaction in stationary state of cationic polymerization. Part V¹. Copolymerization

Abstract

Abstract In order to determine the relationship between the relative reactivity of a monomer and that of its propagating species the propagation rate constant of cationic copolymerization was measured. The relative reactivity of the monomer was found in the following order: for styrene derivative p ‐methoxystyrene > p ‐methylstyrene > styrene > p ‐chlorostyrene; for alkyl vinyl ether: isobutyl vinyl ether > 2‐chloroethyl vinyl ether. On the other hand, the order of the relative reactivity of the propagating species ending in the styrene derivative and the alkyl vinyl ether was as follows: for styrene derivative: p ‐methoxystyrene > p ‐methylstyrene > styrene > p ‐chlorostyrene; for alkyl vinyl ether: 2‐chloroethyl vinyl ether > isobutyl vinyl ether.