Anna Kundys, Andrzej Plichta, Zbigniew Florjańczyk, Anita Frydrych and Konrad Żurawski
Triblock copolymers comprising poly(1,4-butylene adipate) segment and polylactidearmswere obtained under technological conditions. Acetylacetonates of Li, Mg, Ca, Zn, Fe, and Zr were used as catalysts. The macroinitiator is incorporated into the major products; however, linear and cyclic homopolymers and copolymers are present. The efficiency of side reactions, including racemization of polylactide, depends on the catalyst used. The copolymers studied undergo faster biodegradation than polylactide and they can decompose in compost within 16 weeks.