开环聚合
分散性
聚合
高分子化学
取代基
摩尔质量分布
单体
共聚物
化学
锌
戒指(化学)
丙交酯
立体化学
聚合物
有机化学
作者
Yi‐Liang Hsieh,Wachara Benchaphanthawee,Hsu-Hung Teng,Ning Huang,Jingquan Yang,Jyun-Ru Sun,Gene‐Hsiang Lee,Nawee Kungwan,Chi‐How Peng
出处
期刊:Polymer
[Elsevier]
日期:2023-02-01
卷期号:267: 125687-125687
被引量:4
标识
DOI:10.1016/j.polymer.2023.125687
摘要
A series of zinc complexes coordinated with benzotriazo-based imino-phenoxy ligands (ZnII(BTPIP)) has been developed for the mediation of ring-opening polymerization (ROP) of ε−caprolactone (ε−CL) and L−lactide (L−LA). In the presence of ZnII(BTPIP), the polymerization generated the PCL with the molecular weights in the range of 9600–17700 g mol−1 and narrow dispersity (Ð) around 1.08 to 1.33 as well as the PLA showing a molecular weight as 12300–14400 g mol−1 with narrow molecular weight distribution (Ð < 1.11). Furthermore, the living characters of the linearly increased molecular weight with monomer conversion and the synthesis of the tri-block copolymer of PEG-b-PCL-b-PLA were achieved. The substituent effect of ZnII(BTPIP) in the ROPs of ε−CL and L−LA was rationalized by the DFT calculations based on the coordination-insertion mechanism.
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