Synthesis of aliphatic poly(ester-amide)s containing uniform bisamide-bisester blocks

摘要

Aliphatic copoly(ester-amide)s containing short, uniform amide blocks were synthesized from dimethyl adipate, 1,4-butanediol and dimethyl 7,12-diaza-6,13-dioxo-1,18-octadecanedioate by polycondensation in the melt using tetrabutyl(orthotitanoate) as a catalyst. The bisamide blocks were randomly distributed as was shown by ~1H NMR. M_W values of around 50 000 g·mol~(-1) and molecular weight distributions M_W/M_n close to 2 were obtained for all poly(ester-amide)s.