Synthesis of vinyl graft copolymers of poly(hexamethylene adipamide) and poly(m-phenylene isophthalamide)

Nylon 66 poly(hexamethylene adipamide)] and Nomex poly(m-phenylene isophthalamide)] were metalated by using solutions of sodium in liquid ammonia. Metalation of the Nomex polymer was also carried out by using sodium naphthalene in tetrahydrofuran. The metalated polymers were then reacted with acrylonitrile monomer to yield the corresponding anionic graft copolymers. The heterogeneous nature of these reactions is discussed in relation to the structure of the graft copolymers.