Stereoselectivity Switch in the Polymerization of rac-Lactide between Zinc and Magnesium Initiators:Different Coordination Chemistry,Different Stereoselective Mechanisms

【作者】 王号兵； 杨漾； 马海燕；

【Author】 Haobing Wang;Yang Yang;Haiyan Ma;

【机构】 华东理工大学金属有机化学研究室；

【摘要】 <正>Biodegradable polymers such as poly(lactic acid)inherently provide an environmental advantage over petroleum-based polymers due to their biodegradability and biocompatibility desirable for applications ranging from packaging and agricultural materials to drug delivery andmedical facilities.~1 Stereocontrolled ring-opening polymerization(ROP)of rac-lactide catalyzed by metal complexes has been of intense interest for the past two decades,since the physical,mechanical as well as degradation properties of PLAs are intimately dependent on the chain stereochemistry.~2更多还原