Achievement of a Highly Rapid Bond Exchange for Self-Catalyzed Polyester Vitrimers by Incorporating Tertiary Amino Groups on the Network Strands,ACS Applied Polymer Materials

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Achievement of a Highly Rapid Bond Exchange for Self-Catalyzed Polyester Vitrimers by Incorporating Tertiary Amino Groups on the Network Strands
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2021-08-26 , DOI: 10.1021/acsapm.1c00724
Mikihiro Hayashi ₁ , Takaya Inaba ₁

Affiliation

Herein, we describe the preparation of a self-catalyzed polyester vitrimer containing tertiary amino groups on the network strands that overcomes the significantly slow bond exchange often encountered in the reported systems. Starting from a polyester precursor bearing both carboxy and tertiary amino side groups, a selective reaction of the carboxyl groups with diepoxy cross-linkers affords a network that possesses hydroxy and tertiary amino groups. The tertiary amino groups on the network strands effectively work as internal catalysts for the trans-esterification bond exchange. Because of the high mobility of the incorporated internal amine catalyst, the bond exchange in the vitrimer material was much more rapid (more than 20 times) than that in reported self-catalyzed polyester vitrimers.

中文翻译：

通过在网络链上结合叔氨基实现自催化聚酯玻璃体的快速键交换

在本文中，我们描述了在网络链上含有叔氨基的自催化聚酯玻璃体的制备，它克服了报告系统中经常遇到的显着缓慢的键交换。从带有羧基和叔氨基侧基的聚酯前体开始，羧基与双环氧交联剂的选择性反应提供了具有羟基和叔氨基的网络。网络链上的叔氨基有效地用作酯交换键交换的内部催化剂。由于引入的内部胺催化剂的高流动性，玻璃体材料中的键交换比报道的自催化聚酯玻璃体材料中的键交换要快得多（超过 20 倍）。

更新日期：2021-09-10

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