STUDY ON THE TRANSESTERIFICATION OF POLY(β-HYDROXYBUTYRATE) AND POLY(ε-CAPROLACTONE)

CHEN Cheng; FEI Bin; PENG Shuwen; ZHUANG Yugang; CHEN Xuesi; DONG Lisong; FENG Zhiliu

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STUDY ON THE TRANSESTERIFICATION OF POLY(β-HYDROXYBUTYRATE) AND POLY(ε-CAPROLACTONE)

Research Article | 更新时间：2021-03-19

- STUDY ON THE TRANSESTERIFICATION OF POLY(β-HYDROXYBUTYRATE) AND POLY(ε-CAPROLACTONE)
- Acta Polymerica Sinica Issue 2, Pages: 142-148(2002)
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- Published：20 April 2002，
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CHEN Cheng, FEI Bin, PENG Shuwen, ZHUANG Yugang, CHEN Xuesi, DONG Lisong, FENG Zhiliu. STUDY ON THE TRANSESTERIFICATION OF POLY(β-HYDROXYBUTYRATE) AND POLY(ε-CAPROLACTONE). [J]. Acta Polymerica Sinica (2):142-148(2002)
DOI：

CHEN Cheng, FEI Bin, PENG Shuwen, ZHUANG Yugang, CHEN Xuesi, DONG Lisong, FENG Zhiliu. STUDY ON THE TRANSESTERIFICATION OF POLY(β-HYDROXYBUTYRATE) AND POLY(ε-CAPROLACTONE). [J]. Acta Polymerica Sinica (2):142-148(2002) DOI：

摘要

以辛酸亚锡为催化剂

研究了聚β-羟基丁酸酯 (PHB)与聚ε-己内酯 (PCL)在液相条件下的酯交换反应 .讨论了反应时间

反应温度和催化剂浓度对酯交换反应的影响 .采用13C-NMR

FTIR

DSC

WAXD和TGA等方法对PHB和PCL共聚酯(PHB-co-PCL)的结构进行了表征

并对其结晶行为、晶体结构和热稳定性进行了研究 .结果表明

通过酯交换反应

所得到的共聚酯为嵌段共聚物 .提高反应温度和延长反应时间有利于酯交换反应的发生 .随着酯交换量的增加

PHB-co-PCL的结晶行为发生很大的变化.但是

PHB-co-PCL晶体结构并没有因为PCL链段的引入而发生变化

而且它的热稳定性在空气气氛中略有提高.

Abstract

The transesterification of poly(β-hydroxybutyrate) (PHB) and poly(ε-caprolactone) (PCL) was carried out by using stannous octoate as catalyzer in liquid phase．The effects of reaction conditions on the transesterification

including reaction temperature

reaction time and catalyzer content

were investigated．The sequence distribution

crystallization behavior and thermal stability of PHB-co-PCL copolyesters were studied by 13C-NMR

FTIR

DSC

WAXD and TGA．The results showed that the transesterification of PHB with PCL was confirmed to produce a block copolymer

and enhancing reaction temperature and increasing reaction time were advantageous to the transesterification. With the increase in PCL content in the block copolymer

the crystallization behavior of PHB-co-PCL copolyesters changed evidently．On the other hand

Lhe introduction of PCL segment into PHB chains did not change its crystalline structure；moreover

thermal stability of PHB-co-PCL copolyesters was a little improved in air

comparing with that of pure PHB．

关键词

聚β羟基丁酸酯聚ε己内酯共聚酯酯交换

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Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry,State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials Sichuan, Sichuan University

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