Research Progress on the Chain Extension Modification of PLA

Di-qing WU; Bian-ying WEN

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Research Progress on the Chain Extension Modification of PLA

更新时间：2022-09-18

- Research Progress on the Chain Extension Modification of PLA
- Polymer Bulletin Vol. 27, Issue 6, Pages: 32-39(2014)
- 作者机构：
  
  北京工商大学材料与机械工程学院，北京　100048
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2014-06，
  
  Received：08 August 2013，
  
  Revised：11 December 2013，
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Di-qing WU, Bian-ying WEN. Research Progress on the Chain Extension Modification of PLA. [J]. Polymer Bulletin 27(6):32-39(2014)
DOI：

Di-qing WU, Bian-ying WEN. Research Progress on the Chain Extension Modification of PLA. [J]. Polymer Bulletin 27(6):32-39(2014) DOI：

摘要

扩链反应是聚酯类材料生产和回收利用的一种有效手段。聚乳酸是一种新型的可生物降解类聚酯，但脆性大、耐热性差等缺点限制了其应用。扩链反应不仅能够提高聚乳酸的分子量，而且还能通过化学反应引入其它官能团来改善其韧性或赋予其某种功能，对拓展聚乳酸的应用范围具有重要意义。此外，对回收聚乳酸进行扩链增粘来实现材料重复利用也显示出了良好的发展前景。本文主要从扩链剂的种类及其反应机理、扩链改性的应用等方面综述了近年来国内外聚乳酸扩链改性的研究进展，并对其今后的发展方向进行了展望。

Abstract

The chain extension is an effective way for production and recycling of polyesters. As a new biodegradable polyester

the application of poly (lactic acid) is limited due to its disadvantages of brittleness and lower heat resistance. The chain extension can not only increase the molecular weight of poly(lactic acid)

but also endow it with some new features or functions

which can improve its performance and is of great significance to expand its applications. In addition

chain extending to the recycling poly (lactic acid) can also improve its mechanical property

which is a prospect method for the recycling poly (lactic acid) to be reused. In this paper

the type and reaction mechanisms of chain extenders as well as the application of the chain extension modification for poly (lactic acid) are reviewed

and the development trend of relative research is discussed.

关键词

聚乳酸扩链剂反应机理功能化回收利用

Keywords

Poly(lactic acid)Chain extenderReactive mechanismFunctionalizationRecycling

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