Novel Zinc Complexes Containing BDI Ligands for Homo- and Copolymerization of Lactides with ε-Caprolactone
作者单位：Laboratory of Organometallic Chemistry East China University of Science and Technology
会议名称：《2013年全国高分子学术论文报告会》
会议日期：2013年
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
基 金：National Natural Science Foundation of China (21074032) Fundamental Research Funds for the Central Universities (WD1113011-2)
关 键 词：β-Diketiminate zinc complexes rac-lactide ε-caprolactone polymerization copolymerization
摘 要：A series of β-diketiminate zinc silylamido complexes were synthesized by the treatment of the appropriate ligand with Zn[N（SiMe 3 ） 2 ] 2 . All of these zinc complexes showed satisfied catalytic activities for the ring-opening polymerization of rac-lactide at room temperature to afford heterotactic PLAs with high molecular weights and narrow molecular weight distributions. Typical zinc complex Zn8 was evaluated for the one pot copolymerization of L-lactide and ε-caprolactone, diblock copolymer with slight random microstructure was obtained, which was characterized by 1 H and 13 C NMR spectroscopy, GPC and DSC analysis.