The Crystallization and Melting Behavior of Degradable PLA with PEG

Guo-xiang ZOU; Xin ZHANG; Cai-xia ZHAO; Jing-chun LI

doi:10.14028/j.cnki.1003-3726.2011.11.011

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The Crystallization and Melting Behavior of Degradable PLA with PEG

更新时间：2022-09-18

- The Crystallization and Melting Behavior of Degradable PLA with PEG
- Polymer Bulletin Vol. 24, Issue 11, Pages: 69-73(2011)
- 作者机构：
  
  常州大学材料科学与工程学院，常州市高分子材料重点实验室，常州　213164
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2011.11.011
  CLC：
- Published：2011-11，
  
  Received：08 March 2011，
  
  Revised：11 April 2011，
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Guo-xiang ZOU, Xin ZHANG, Cai-xia ZHAO, Jing-chun LI. The Crystallization and Melting Behavior of Degradable PLA with PEG. [J]. Polymer Bulletin 24(11):69-73(2011)
DOI：

Guo-xiang ZOU, Xin ZHANG, Cai-xia ZHAO, Jing-chun LI. The Crystallization and Melting Behavior of Degradable PLA with PEG. [J]. Polymer Bulletin 24(11):69-73(2011) DOI： 10.14028/j.cnki.1003-3726.2011.11.011.

摘要

用DSC 和XRD 研究了聚乙二醇(PEG) 用量、分子量和退火温度对PLA 结晶和熔融行为的影响。结果表明PEG 的加入有利提高PLA 的结晶度和结晶温度;PLA/ PEG 样品在低于100 ℃退火后均表现出双熔融峰特征

退火温度越高

样品的低熔融峰(

) 越高且熔融热焓也越高;PEG 分子量越大

其低熔融峰的熔融热焓(Δ

) 越大

也越高。

Abstract

This paper studied the effect of the annealing temperature

the content and

of PEG on the crystal and melting behavior of PLA. The results indicted that the crystallinity increased and crystal temperature increased with the addition of PEG. All samples showed double melting peak after annealing 120min. The

and Δ

1 of samples annealing at 100 ℃ is hig her than that annealing at 80 ℃; The

of samples G was heightened and the Δ

1 of samples was enlarged with the increase of

of PEG.

关键词

聚乳酸双熔融峰结晶行为熔融行为

Keywords

PLADouble Melting PeakCry stallization BehaviorMelting Behavior

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