AbstractA study has been made of the structure and properties of alternating equimolar and random copolymers of vinylcyclohexanne and α‐methylvinylcyclohexane with acrylonitrile using infrared and1H‐NMR spectroscopy methods, as well as x‐ray diffraction and differential thermal analyses. The spectral methods allowed an estimation of the composition and distribution of comonomer units in the copolymer macrochains. The thermal stability of alternating copolymers was found to be higher than that of polyacrylonitrile. Alternating and random copolymers are amorphous products with various dimensions of crystallites. Information on the molecular motion intensity and temperatures of structural transitions in copolymer macrochains was obtained by the spin‐probe t
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