STUDY OF IONOMER BLENDS BASED ON A POLYURETHANE CATIONOMER AND AN ACRYLIC ANIONOMER

Polyurethane and polyurethane cationomers were synthesized using 2,3-d ihydroxypyridine and 2,3-dihydroxypyridine hydrochloride as chain exte nders. Poly(butyl methacrylate-co-methacrylic acid) was synthesized by free radical solution polymerization and was converted into its sodiu m salt. The polyurethane cationomer and the acrylic anionomer were ble nded in different proportions in N,N-dimethylformamide. Simple blends without ionic groups were also prepared. Miscibility enhancement in th ese systems was studied by means of differential scanning calorimetry and scanning electron microscopy.