this invention relates to fiber - forming bioabsorbable polys made by the polymerization of diamidediols with 3 , 6 - dioxaoctanedioic acid , also known as “ triglycolic acid ”. more specifically it relates to diol terminated polys of triglycolic acid that are optionally further reacted with glycolide , lactide , trimethylene carbonate , epsilon - caprolactone , or p - dioxanone , or mixtures of said cyclic monomers to produce the corresponding block copolymers . said polymers are useful in the production of surgical sutures having superior performance characteristics including low bending stiffness and in the production of other fiber - based bioabsorbable implants and molded devices .