Research Progress of the Preparation of Polylactic Acid Foam by Supercritical Fluid

Qian REN; Peng-ke HUANG; Yong-qing ZHAO; Long WANG; Wen-ge ZHENG

doi:10.14028/j.cnki.1003-3726.2021.05.005

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Research Progress of the Preparation of Polylactic Acid Foam by Supercritical Fluid

更新时间：2022-08-30

- Research Progress of the Preparation of Polylactic Acid Foam by Supercritical Fluid
- Polymer Bulletin Vol. 34, Issue 5, Pages: 52-64(2021)
- 作者机构：
  
  1.中国科学院宁波材料技术与工程研究所宁波市高分子材料重点实验室,宁波 315201
  2.中国科学院大学,北京 100049
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2021.05.005
  CLC：
- Published：20 May 2021，
  
  Received：09 September 2020，
  
  Revised：03 January 2021，
扫描看全文
Qian REN, Peng-ke HUANG, Yong-qing ZHAO, Long WANG, Wen-ge ZHENG. Research Progress of the Preparation of Polylactic Acid Foam by Supercritical Fluid. [J]. Polymer Bulletin 34(5):52-64(2021)
DOI：

Qian REN, Peng-ke HUANG, Yong-qing ZHAO, Long WANG, Wen-ge ZHENG. Research Progress of the Preparation of Polylactic Acid Foam by Supercritical Fluid. [J]. Polymer Bulletin 34(5):52-64(2021) DOI： 10.14028/j.cnki.1003-3726.2021.05.005.

摘要

石油基聚合物如聚苯乙烯等发泡材料因其质轻及优异的性能而受到广泛的应用。但是

石油基聚合物在自然环境条件下难以降解

存在“白色污染”的问题。因此

亟需开发绿色环境友好的聚合物发泡材料来代替石油基聚合物发泡材料。聚乳酸(PLA)是一种以可再生资源为原料的绿色高分子聚合物

因其具有完全生物可降解性

得到越来越多的关注。PLA 具有良好的加工性能及力学性能

将其制备成轻量化的发泡材料会赋予其良好的吸音、隔热以及缓冲性能

是取代石油类聚合物的理想生物基聚合物

可以应用在包装、建筑、餐具以及组织支架等领域。PLA的熔体由于强度低、结晶速率慢

难以制备成泡孔分布均匀、膨胀倍率高的PLA发泡材料。为此

本文综述了近年来围绕改善PLA发泡行为的研究进展

包括利用不同超临界流体发泡技术制备PLA发泡材料、PLA发泡材料的改性方法、力学性能的影响因素及其不断拓宽的应用领域。

Abstract

Petroleum-based polymers such as polystyrene are widely used for their light weight and excellent properties. However

the petroleum-based polymers are difficult to degrade in the natural environment and casue the issue of "white pollution" . Therefore

it is urgent to develop green and environmentally friendly polymeric foam to replace petroleum-based polymeric foam. Poly(lactic acid) (PLA) is a kind of green polymer made from renewable resources. PLA has good processing and mechanical properties

and foaming makes it with good sound absorption

heat insulation and cushion effect. It is an ideal bio-based polymer to replace petroleum polymer

and PLA can be used in packaging

architecture

tableware and tissue scaffolds. However

due to the low melt strength and slow crystallization rate of PLA

it is difficult to obtain PLA foam with uniform cell distribution and high expansion ratio. In this study

we review the research progress on improving the foaming behavior of PLA in recent years

including the preparation of PLA foam via different foaming technologies

modification methods of PLA foam

influencing factors of mechanical properties and its expanding application fields.

关键词

超临界流体聚乳酸发泡

Keywords

Supercritical fluidPolylactic acidFoam

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