Abstract: Solution polymerization behaviors of L-lactide using single and mixed aluminium catalyst systems were studied. Triisobutylaluminium (TIBA) was a reference catalyst for mixing. For the Al(O-i-Pr) 3 /TIBA catalytic systems, the molecular weight of the resulting polylactide (PLA) decreased as the composition of Al(O-i-Pr) 3 increased. The higher molecular weight shoulder was revealed in their GPC curve. At TIBA of 80 mol% a bimodal GPC curve was shown. The conversion in the trimethylaluminium (TMA)/TIB…
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