Polymers with pendant isocyanate groups. II. Dual synthesis and properties of poly(acrylonitrile‐co‐styryl isocyanate)

摘要

AbstractThe copolymer poly(acrylonitrile‐co‐styryl isocyanate) was prepared directly in bulk by radical initiation either from the monomer pair acrylonitrile–cinnamoyl azide or from the pair acrylonitrile–styryl isocyanate. The copolymerization parameters, calculated by the conventional scheme, arer1, = 3.5 ± 0.5;r2= 0 ± 0.5, for the first pair andr1= 9 ± 0.5;r2= 0 ± 0.5 for the second pair. The basic physical properties (solubility, intrinsic viscosity, and thermal behavior) of the new copolymer were determined and the chemical reactions of the isocyanate group with alcohol and with dimethylformamide were i