稀土配位催化合成聚乳酸

The Synthesis of Poly (lactic acid) by Rare Earth Coordination Catalysts

本文开发了合成聚乳酸的一类新型催化剂,它是由稀土化合物-三烷基铝-水组成的配位催化剂,试验表明稀土配位催化剂可以使丙交酯在甲苯溶液中以高转化率聚合,得到分子量可控的聚乳酸。并研究了稀土元素种类、不同配位基团及聚合条件变化对丙交酯开环聚合的影响。

New catalysts composed of rare earth compound, trialkyl aluminum and water have been developed for the synthesis of poly (lactic acid). The investigation revealed that D, L-lactide can be polymerized into poly (lactic acid) with high yield and controllable molecular weight in toluene solution by these new rare earth coordination