Butanolysis of poly(lactic acid) catalyzed by ionic liquids

SONG Xiuyan; WANG Hui; ZHANG Xiaojing; LIU Fusheng; LU Jiaxiang

doi:10.11949/j.issn.0438-1157.20141812

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Butanolysis of poly(lactic acid) catalyzed by ionic liquids

更新时间：2025-12-10

- Butanolysis of poly(lactic acid) catalyzed by ionic liquids
- CIESC Journal Issue S1, Pages: 187-191(2015)
- 作者机构：
  
  1. 青岛科技大学化工学院,山东,青岛,266042
  2. 青岛农业大学化学与药学院,山东,青岛,266109
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141812
  CLC： Q323.41
- Online First：30 June 2015，
  
  Published：30 June 2015
- 稿件说明：
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SONG Xiuyan, WANG Hui, ZHANG Xiaojing, et al. Butanolysis of poly(lactic acid) catalyzed by ionic liquids[J]. CIESC Journal, 2015, (S1): 187-191.
DOI：

SONG Xiuyan, WANG Hui, ZHANG Xiaojing, et al. Butanolysis of poly(lactic acid) catalyzed by ionic liquids[J]. CIESC Journal, 2015, (S1): 187-191. DOI： 10.11949/j.issn.0438-1157.20141812.

摘要

以离子液体[Bmim][OAc]为反应介质和催化剂

对聚乳酸 (PLA)丁醇醇解反应进行了研究。考察了反应温度、反应时间、离子液体用量、丁醇(n-butanol)用量对反应结果的影响。得到较佳工艺条件为:反应温度为150℃、反应时间为3 h、m([Bmim][OAc]):m(PLA)=0.2:1、n(n-butanol):n(PLA)=5:1。在上述条件下

PLA醇解反应转化率≥81%

乳酸正丁酯收率≥70%。采用FT-IR技术对产品的结构进行了表征。离子液体的回用性能结果表明:[Bmim][OAc]重复利用6次后

PLA转化率和乳酸正丁酯收率无明显变化。

Abstract

The butanolysis of poly(lactic acid) (PLA) was studied using ionic liquid [Bmim][OAc] as solvent and catalyst. The effects of reaction temperature

reaction time

ionic liquid dosage and n-butanol dosage were examined. It was indicated that the conversion of PLA was≥81% and the yield of n-butyl lactate was≥70% under the following conditions: reaction temperature 150℃

reaction time 3 h

m([Bmim][OAc]):m(PLA)=0.2:1 and n(n-butanol):n(PLA)=5:1. Reusability of ionic liquid showed that [Bmim][OAc] could be reused up to 6 times without change in the conversion of PLA and yield of n-butyl lactate.

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