Complex formation in alkali-modified polyacrylonitrile macromolecules

The structure of PAN macromolecules modified with alkali was investigated b y the optical spectroscopy methods. The final stage of this reaction was st udied when the formed structure was stable with respect to the addition of new portions of the reagent. A multiblock copolymer of acrylonitrile contai ning up to 60% of cyclized CN groups was employed as a model polymer. It wa s shown that the cyclic structures incorporated into the compactized PAN ma cromolecules are associated into rather strong complexes. The structural mo del of such complex was proposed.