Recent Research Progress in Stereoselective Polymerization of Rac-lactide

Yong-fei LI; Qin WU; Mei-li GAO

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Recent Research Progress in Stereoselective Polymerization of Rac-lactide

更新时间：2022-09-18

- Recent Research Progress in Stereoselective Polymerization of Rac-lactide
- Polymer Bulletin Vol. 25, Issue 8, Pages: 118-124(2012)
- 作者机构：
  
  1.西安工业大学材料与化工学院，西安　710032
  2.西安交通大学生命科学与技术学院，西安　710049
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012-08，
  
  Received：22 January 2012，
  
  Revised：05 April 2012，
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Yong-fei LI, Qin WU, Mei-li GAO. Recent Research Progress in Stereoselective Polymerization of Rac-lactide. [J]. Polymer Bulletin 25(8):118-124(2012)
DOI：

Yong-fei LI, Qin WU, Mei-li GAO. Recent Research Progress in Stereoselective Polymerization of Rac-lactide. [J]. Polymer Bulletin 25(8):118-124(2012) DOI：

摘要

脂肪酸聚酯聚乳酸具有生物降解性和生物相容性

可用于生物医学、药物和环境材料等领域。本文综述了丙交酯聚合研究的最新进展

突出强调了催化活性高、能够控制聚合物立构规整性的丙交酯开环聚合催化剂。由于选用的催化剂和丙交酯单体的不同

聚乳酸有等规、无规、杂同、间规以及立体嵌段等不同的微观结构

不同微观结构的聚乳酸的力学、物理和降解性能不同。本文重点列举了单活性中心的铝、稀土金属和环境友好型铁、锌、镁以及不含金属的有机催化剂在外消旋丙交酯的立体选择开环聚合方面的最新进展

强调低毒性、生物相容性好的催化剂是目前研究的重点。最后指出

随着环境友好聚乳酸材料的合成和应用的增加

开发单活性中心以及无金属催化剂研究丙交酯立体选择开环聚合是今后研究的一个重要的课题。

Abstract

Polylactide (PLA) is an aliphatic polyester composed of lactide (LA) repeat units. It is the biodegradable and biocompatible material and has attracted much attention recently for the biomedical

pharmaceutical and environmental applications. The review summarizes recent developments in the catalytic polymerization of lactide. Emphasis is placed on the new initiators/catalysts for the ring opening polymerization (ROP) of lactide. Single-site that has high rates or stereocontrol catalysts is provided. Because the stereochemistry of monomeric units in the polymer chains plays a decisive role in the mechanical

physical and degradation proterties of PLA materials

Different polylactide architectures

namely stereoregular PLLA and PDLA

atactic

heterotactic

syndiotactic and stereoblock PLAs are produced depending on the catalysts and the LA monomers used. In this review

we mainly focus on single site catalysts

including aluminum

rare earth metal and the environmentally friendly iron

zinc

magnesium and nonmetallic catalysts for the stereoselective polymerization of lactide. Catalysts displaying low toxicity and biocompatibility are emphasized. It can be reasonably anticipated that the synthesis and practical applications of environmentally friendly PLA will keep increasing at the industrial scale. In this respect

further development in the stereocontrolled ROP of lactide using well-defined single site complexes and nonmetallic catalytic systems will be an attract topic.

关键词

丙交酯聚乳酸催化剂开环聚合立体选择性

Keywords

LactidePolylactideCatalystRing opening polymerizationStereoselectivity

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