苄醇存在下脂肪叔胺催化内酯开环聚合

颜明发; 王涛; 黄永凯; 强娜; 全大萍

doi:10.3724/SP.J.1105.2011.10292

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苄醇存在下脂肪叔胺催化内酯开环聚合

研究论文 | 更新时间：2021-03-19

- 苄醇存在下脂肪叔胺催化内酯开环聚合
- RING-OPENING POLYMERIZATION OF LACTONE IN THE PRESENCE OF BENZYL ALCOHOL CATALYZED BY ALIPHATIC TERTIARY AMINE
- 高分子学报 2011年第11期页码：1231-1236
- 作者机构：
  
  新型聚合物材料设计合成与应用广东省高校重点实验室聚合物复合材料与功能材料教育部重点实验中山大学化学与化学工程学院,广州,510275
- 作者简介：
- 基金信息：
- DOI：10.3724/SP.J.1105.2011.10292
  中图分类号：
- 纸质出版日期：2011-11-20，
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颜明发, 王涛, 黄永凯, 强娜, 全大萍. 苄醇存在下脂肪叔胺催化内酯开环聚合[J]. 高分子学报, 2011,(11):1231-1236.

YAN Ming-Fa, WANG Tao, HUANG Yongkai, QIANG Na, QUAN Daping. RING-OPENING POLYMERIZATION OF LACTONE IN THE PRESENCE OF BENZYL ALCOHOL CATALYZED BY ALIPHATIC TERTIARY AMINE[J]. Acta Polymerica Sinica, 2011,(11):1231-1236.
颜明发, 王涛, 黄永凯, 强娜, 全大萍. 苄醇存在下脂肪叔胺催化内酯开环聚合[J]. 高分子学报, 2011,(11):1231-1236. DOI： 10.3724/SP.J.1105.2011.10292.

YAN Ming-Fa, WANG Tao, HUANG Yongkai, QIANG Na, QUAN Daping. RING-OPENING POLYMERIZATION OF LACTONE IN THE PRESENCE OF BENZYL ALCOHOL CATALYZED BY ALIPHATIC TERTIARY AMINE[J]. Acta Polymerica Sinica, 2011,(11):1231-1236. DOI： 10.3724/SP.J.1105.2011.10292.

摘要

为研究脂肪叔胺结构对内酯开环聚合规律的影响

以三乙胺(TEA)、N

N'-四甲基乙二胺(TMEDA)、N

N-五甲基二亚乙基三胺(PMDTA)3种不同结构的叔胺催化碳酸三亚甲基酯(TMC)和左旋丙交酯(L-LA)开环聚合.结果显示

在55℃的THF溶液中

以苄醇为引发剂

3种叔胺均能催化TMC和 L -LA的开环聚合

聚合物的分子量与单体转化率成线性关系

表现出活性聚合特征.三者催化能力为TEA TMEDA PMDTA.对聚合物进行端基分析发现聚合反应可能是一个由醇活化机理引发的过程.

Abstract

In order to study the structure and the catalytic activity of aliphatic tertiary amines

the ring-opening polymerizations of trimethylene carbonate (TMC) and L-lactide (L-LA) were catalyzed by aliphatic tertiary amines

including triethylamine (TEA)

N'-tetramethylethylenediamine (TMEDA)

7-pentamethyldiethylenetriamine (PMDTA) and 4-(dimethylamino)pyridine (DMAP)

using benzyl alcohol as initiator in THF at 55℃.Studies revealed the catalytic activity of these tertiary amines was increased according to the order:TEA TMEDAPMDTA DMAP.The relationships of polymer molecular weight with the conversion of monomer were linear

which were consistent with a living polymerization character.Finally

the plausible polymerization pathway was through an alcohol-activating mechanism.Aliphatic tertiary amines which were abundant in source and cheap in price were suitable for catalyzing the ring-opening bulk polymerization of lactone in low temperature because of their low boiling point

being liquid under ordinary conditions and being easy to get rid of.

关键词

脂肪族叔胺碳酸三亚甲基酯(TMC)丙交酯开环聚合

Keywords

Aliphatic tertiary aminesTrimethylene carbonateL-lactideRing-opening polymerization

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