Acrylonitrile–4‐vinylpyridine copolymers effect of comonomer sequence distribution on properties

Abstract

Abstract Acrylonitrile–,4‐vinylpyridine copolymers were prepared in chloroform solution at 60°C with AIBN as initiator. Copolymer compositions were determined from their 15.01‐MHz 13 C‐NMR spectra. Reactivity ratios of r AN = 0.093 and r 4VP = 0.32 were calculated by the Kelen and Tudos method. The run number, number‐average sequence lengths, and monomer sequence distributions were also calculated. The T g values of the copolymers, their dye uptake, and degree of alkaline hydrolysis were influenced by the overall copolymer composition but particularly by the monomer sequence distribution in the copolymers.