Journal of polymer science part a The nipa content of the monomer feed varied from 80 to 50 mol %, and other comonomer feed varied from 40 to 5 mol %. The molecular weights of poly (n‐vinylformamide) [poly (nvf)] obtained by free‐radical polymerization were expanded from being in the range of thousands to hundreds of thousands Primary amino groups were introduced by the hydrolysis of poly (nvf) under both acidic and basic conditions. N‐vinyl‐n‐butyramide (nvba), n‐vinylisovaleramide (nviva), and n‐vinyl‐n‐valeramide (nvva), which are n‐vinylalkylamides with different alkyl groups were synthesized and their solution behavior in a polymeric form was examined.
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