Synthesis of Polyesters from Ring-opening (Co)polymerization by Aluminum Bipyridine Bisphenolate Complexes

Bin Wang

doi:10.11777/j.issn1000-3304.2022.22433

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Synthesis of Polyesters from Ring-opening (Co)polymerization by Aluminum Bipyridine Bisphenolate Complexes

Feature Article | 更新时间：2023-05-31

- Synthesis of Polyesters from Ring-opening (Co)polymerization by Aluminum Bipyridine Bisphenolate Complexes
- ACTA POLYMERICA SINICA Vol. 54, Issue 6, Pages: 778-790(2023)
- 作者机构：
  
  天津大学材料科学与工程学院天津 300350
- 作者简介：
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2022.22433
  CLC：
- Published：20 June 2023，
  
  Published Online：17 February 2023，
  
  Received：13 December 2022，
  
  Accepted：10 January 2023
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王彬.联吡啶双酚铝催化开环（共）聚合制备聚酯材料[J].高分子学报,2023,54(06):778-790.

Wang Bin.Synthesis of Polyesters from Ring-opening (Co)polymerization by Aluminum Bipyridine Bisphenolate Complexes[J].ACTA POLYMERICA SINICA,2023,54(06):778-790.
王彬.联吡啶双酚铝催化开环（共）聚合制备聚酯材料[J].高分子学报,2023,54(06):778-790. DOI： 10.11777/j.issn1000-3304.2022.22433.

Wang Bin.Synthesis of Polyesters from Ring-opening (Co)polymerization by Aluminum Bipyridine Bisphenolate Complexes[J].ACTA POLYMERICA SINICA,2023,54(06):778-790. DOI： 10.11777/j.issn1000-3304.2022.22433.

摘要

有机金属配合物是研究和应用最为广泛的开环(共)聚合催化剂. 其中，Salen-铝配合物(Salen)AlX已成功用于催化环酯开环聚合、环酐(或CO

)/环氧烷烃开环共聚合、对映异构体立体选择性聚合以及混合单体的序列选择性聚合，极大地推动了聚酯材料的发展. 然而，由于“稀释效应”以及催化剂分解，(Salen)AlX在高单体/催化剂投料比(催化剂相对浓度较低)时催化活性会严重衰减甚至完全失活. 提高催化剂的稳定性及杂质耐受性，并抑制催化剂的“稀释效应”，在保持聚合活性和可控性的同时降低催化剂用量、减少催化剂在聚酯中的残留是环境友好高分子领域的重要研究目标之一. 我们利用稳定的吡啶环替代Salen配体中易分解的席夫碱结构，获得了高效稳定的联吡啶双酚铝氯化物(BpyBph)AlCl. 本专论总结了(BpyBph)AlCl在催化丙交酯开环聚合、环(硫)酐/环氧烷烃开环共聚合以及多组分混合单体的序列选择性聚合制备具有精确链结构的聚酯材料方面的研究进展，重点阐述了(BpyBph)AlCl在催化活性、热稳定性、杂质耐受性以及聚合可控性方面的独特优势.

Abstract

Organometallics are one kind of potential catalytic system for synthesis of polyester from ring-opening (co)polymerization

because their catalytic performance can be easily modulated by tuning the Lewis acidity of the metal centre and modifying the electronic or steric effects of ligand backbone. In the past decades

the aluminum complexes with salen-type ligand have been widely used in ring-opening polymerization of cyclic ester

ring-opening copolymerization of (thio)anhydride and epoxide

stereo-selective ring-opening polymerization and chemo-selective multicomponent polymerization for farbricating well-defined polyesters. However

the traditional salen-Al complexes generally suffer from low catalytic activity or complete deactiveation at low catalyst concentration or high concentration of chain transfer agent

owing to the concentration effects and the decomposition of the catalyst caused by protic agents. It is desirable to develop catalytic system with high stability and good compatibility with protonic agents

which is important for decreasing catalyst loading

reducing the cost

minimizing the catalyst residual and increasing the molecular weight. Recently

we synthesized a series of bipyridine bisphenolate aluminum (BpyBph-Al) complexes and used these complexes to catalyze the lactide polymerization

melaic anhydride/epoxide copolymerization and thioanhydride/epoxide copolymerization. This feature article summarizes the recent progress on synthesis of polyesters by using (BpyBph-Al) complexes and discussed the their unique advantages in ring-opening (co)polymerization.

关键词

环境友好高分子催化剂开环聚合开环交替共聚有机金属配合物

Keywords

Environmental-friendly polymerCatalystRing-opening polymerizationRing-opening alternating copolymerizationOrganometallics

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Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology

State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering

Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education

College of Chemical Engineering, Qingdao University of Science and Technology

Key Laboratory of Biobased Polymer Material, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology

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